39988892 has 12 divisors (see below), whose sum is σ = 70600656. Its totient is φ = 19817280.

The previous prime is 39988867. The next prime is 39988903. The reversal of 39988892 is 29888993.

It is a super-2 number, since 2×39988892² = 3198222966775328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43784 + ... + 44687.

It is an arithmetic number, because the mean of its divisors is an integer number (5883388).

Almost surely, 2^39988892 is an apocalyptic number.

It is an amenable number.

39988892 is a deficient number, since it is larger than the sum of its proper divisors (30611764).

39988892 is a wasteful number, since it uses less digits than its factorization.

39988892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88588 (or 88586 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 56.

The square root of 39988892 is about 6323.6770948555. The cubic root of 39988892 is about 341.9635290498.

The spelling of 39988892 in words is "thirty-nine million, nine hundred eighty-eight thousand, eight hundred ninety-two".