49999039931 has 4 divisors (see below), whose sum is σ = 50001423000. Its totient is φ = 49996656864.

The previous prime is 49999039927. The next prime is 49999039933. The reversal of 49999039931 is 13993099994.

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 49999039931 - 2² = 49999039927 is a prime.

It is a super-2 number, since 2×49999039931² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49999039933) 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, 1159781 + ... + 1202118.

It is an arithmetic number, because the mean of its divisors is an integer number (12500355750).

Almost surely, 2^49999039931 is an apocalyptic number.

49999039931 is a deficient number, since it is larger than the sum of its proper divisors (2383069).

49999039931 is a wasteful number, since it uses less digits than its factorization.

49999039931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383068.

The product of its (nonzero) digits is 19131876, while the sum is 65.

The spelling of 49999039931 in words is "forty-nine billion, nine hundred ninety-nine million, thirty-nine thousand, nine hundred thirty-one".