39988988 has 12 divisors (see below), whose sum is σ = 75363960. Its totient is φ = 18456432.

The previous prime is 39988951. The next prime is 39989009. The reversal of 39988988 is 88988993.

It is a super-2 number, since 2×39988988² = 3198238322528288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39988988.

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, 384458 + ... + 384561.

It is an arithmetic number, because the mean of its divisors is an integer number (6280330).

Almost surely, 2^39988988 is an apocalyptic number.

It is an amenable number.

39988988 is a deficient number, since it is larger than the sum of its proper divisors (35374972).

39988988 is a wasteful number, since it uses less digits than its factorization.

39988988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769036 (or 769034 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 62.

The square root of 39988988 is about 6323.6846853713. The cubic root of 39988988 is about 341.9638026964.

The spelling of 39988988 in words is "thirty-nine million, nine hundred eighty-eight thousand, nine hundred eighty-eight".