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49952789 = 131381319
BaseRepresentation
bin1011111010001…
…1100000010101
310110222212100022
42332203200111
5100241442124
64542354525
71144406645
oct276434025
9113885308
1049952789
11262192a7
121488ba45
13a46ca83
1468c4525
1545bac5e
hex2fa3815

49952789 has 4 divisors (see below), whose sum is σ = 50334240. Its totient is φ = 49571340.

The previous prime is 49952731. The next prime is 49952797. The reversal of 49952789 is 98725994.

49952789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98725994 = 249362997.

It is a cyclic number.

It is not a de Polignac number, because 49952789 - 224 = 33175573 is a prime.

It is a super-2 number, since 2×499527892 = 4990562257757042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49952789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49951789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190529 + ... + 190790.

It is an arithmetic number, because the mean of its divisors is an integer number (12583560).

Almost surely, 249952789 is an apocalyptic number.

It is an amenable number.

49952789 is a deficient number, since it is larger than the sum of its proper divisors (381451).

49952789 is a wasteful number, since it uses less digits than its factorization.

49952789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381450.

The product of its digits is 1632960, while the sum is 53.

The square root of 49952789 is about 7067.7287016410. The cubic root of 49952789 is about 368.2871621430.

The spelling of 49952789 in words is "forty-nine million, nine hundred fifty-two thousand, seven hundred eighty-nine".

Divisors: 1 131 381319 49952789