49992749 has 4 divisors (see below), whose sum is σ = 50021664. Its totient is φ = 49963836.

The previous prime is 49992737. The next prime is 49992757. The reversal of 49992749 is 94729994.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49992749 is a prime.

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 49992749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49992769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11687 + ... + 15380.

It is an arithmetic number, because the mean of its divisors is an integer number (12505416).

Almost surely, 2^49992749 is an apocalyptic number.

It is an amenable number.

49992749 is a deficient number, since it is larger than the sum of its proper divisors (28915).

49992749 is a wasteful number, since it uses less digits than its factorization.

49992749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28914.

The product of its digits is 1469664, while the sum is 53.

The square root of 49992749 is about 7070.5550701483. Note that the first 3 decimals coincide. The cubic root of 49992749 is about 368.3853403948.

The spelling of 49992749 in words is "forty-nine million, nine hundred ninety-two thousand, seven hundred forty-nine".