49879931 has 4 divisors (see below), whose sum is σ = 49903200. Its totient is φ = 49856664.

The previous prime is 49879927. The next prime is 49879937. The reversal of 49879931 is 13997894.

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

It is a cyclic number.

It is not a de Polignac number, because 49879931 - 2² = 49879927 is a prime.

It is a super-2 number, since 2×49879931² = 4976015033129522, 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 49879931.

It is not an unprimeable number, because it can be changed into a prime (49879937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8051 + ... + 12828.

It is an arithmetic number, because the mean of its divisors is an integer number (12475800).

Almost surely, 2^49879931 is an apocalyptic number.

49879931 is a deficient number, since it is larger than the sum of its proper divisors (23269).

49879931 is a wasteful number, since it uses less digits than its factorization.

49879931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23268.

The product of its digits is 489888, while the sum is 50.

The square root of 49879931 is about 7062.5725482999. The cubic root of 49879931 is about 368.1080215140.

The spelling of 49879931 in words is "forty-nine million, eight hundred seventy-nine thousand, nine hundred thirty-one".