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49384961 = 206923869
BaseRepresentation
bin1011110001100…
…0111000000001
310102221000102122
42330120320001
5100120304321
64522254025
71136523323
oct274307001
9112830378
1049384961
112597071a
1214657315
13a301492
1467b7613
1545078ab
hex2f18e01

49384961 has 4 divisors (see below), whose sum is σ = 49410900. Its totient is φ = 49359024.

The previous prime is 49384939. The next prime is 49384987. The reversal of 49384961 is 16948394.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22800625 + 26584336 = 4775^2 + 5156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-49384961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49384901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9866 + ... + 14003.

It is an arithmetic number, because the mean of its divisors is an integer number (12352725).

Almost surely, 249384961 is an apocalyptic number.

It is an amenable number.

49384961 is a deficient number, since it is larger than the sum of its proper divisors (25939).

49384961 is a wasteful number, since it uses less digits than its factorization.

49384961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25938.

The product of its digits is 186624, while the sum is 44.

The square root of 49384961 is about 7027.4434184844. The cubic root of 49384961 is about 366.8863648462.

The spelling of 49384961 in words is "forty-nine million, three hundred eighty-four thousand, nine hundred sixty-one".

Divisors: 1 2069 23869 49384961