39890712 has 32 divisors (see below), whose sum is σ = 99920880. Its totient is φ = 13271040.

The previous prime is 39890693. The next prime is 39890737. The reversal of 39890712 is 21709893.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14088 + ... + 16680.

Almost surely, 2^39890712 is an apocalyptic number.

It is an amenable number.

39890712 is an abundant number, since it is smaller than the sum of its proper divisors (60030168).

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

39890712 is a wasteful number, since it uses less digits than its factorization.

39890712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243 (or 3239 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 39890712 is about 6315.9094357028. The cubic root of 39890712 is about 341.6834388224.

The spelling of 39890712 in words is "thirty-nine million, eight hundred ninety thousand, seven hundred twelve".