39801988868 has 12 divisors (see below), whose sum is σ = 69810714960. Its totient is φ = 19856070312.

The previous prime is 39801988859. The next prime is 39801988883. The reversal of 39801988868 is 86888910893.

It is a junction number, because it is equal to n+sod(n) for n = 39801988798 and 39801988807.

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, 11229038 + ... + 11232581.

It is an arithmetic number, because the mean of its divisors is an integer number (5817559580).

Almost surely, 2^39801988868 is an apocalyptic number.

It is an amenable number.

39801988868 is a deficient number, since it is larger than the sum of its proper divisors (30008726092).

39801988868 is a wasteful number, since it uses less digits than its factorization.

39801988868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22462066 (or 22462064 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 68.

The spelling of 39801988868 in words is "thirty-nine billion, eight hundred one million, nine hundred eighty-eight thousand, eight hundred sixty-eight".