39989000756 has 24 divisors (see below), whose sum is σ = 70316361024. Its totient is φ = 19898815680.

The previous prime is 39989000699. The next prime is 39989000789. The reversal of 39989000756 is 65700098993.

It is a Smith number, since the sum of its digits (56) 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774896 + ... + 824888.

It is an arithmetic number, because the mean of its divisors is an integer number (2929848376).

Almost surely, 2^39989000756 is an apocalyptic number.

It is a pronic number, being equal to 199972×199973.

It is an amenable number.

39989000756 is a deficient number, since it is larger than the sum of its proper divisors (30327360268).

39989000756 is a wasteful number, since it uses less digits than its factorization.

39989000756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50951 (or 50949 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 56.

The spelling of 39989000756 in words is "thirty-nine billion, nine hundred eighty-nine million, seven hundred fifty-six", and thus it is an aban number.