39902442531 has 8 divisors (see below), whose sum is σ = 60803721984. Its totient is φ = 22801395720.

The previous prime is 39902442529. The next prime is 39902442553. The reversal of 39902442531 is 13524420993.

39902442531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39902442531 - 2¹ = 39902442529 is a prime.

It is a super-2 number, since 2×39902442531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39902442031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950058135 + ... + 950058176.

It is an arithmetic number, because the mean of its divisors is an integer number (7600465248).

Almost surely, 2^39902442531 is an apocalyptic number.

39902442531 is a deficient number, since it is larger than the sum of its proper divisors (20901279453).

39902442531 is a wasteful number, since it uses less digits than its factorization.

39902442531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1900116321.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 39902442531 in words is "thirty-nine billion, nine hundred two million, four hundred forty-two thousand, five hundred thirty-one".