39988902 has 32 divisors (see below), whose sum is σ = 82373760. Its totient is φ = 12936320.

The previous prime is 39988867. The next prime is 39988903. The reversal of 39988902 is 20988993.

It is a super-2 number, since 2×39988902² = 3198224566331208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39988903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28702 + ... + 30062.

It is an arithmetic number, because the mean of its divisors is an integer number (2574180).

Almost surely, 2^39988902 is an apocalyptic number.

39988902 is an abundant number, since it is smaller than the sum of its proper divisors (42384858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39988902 is a wasteful number, since it uses less digits than its factorization.

39988902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 39988902 is about 6323.6778855347. The cubic root of 39988902 is about 341.9635575547.

The spelling of 39988902 in words is "thirty-nine million, nine hundred eighty-eight thousand, nine hundred two".