39919364868 has 48 divisors (see below), whose sum is σ = 94168416384. Its totient is φ = 13160463360.

The previous prime is 39919364843. The next prime is 39919364879. The reversal of 39919364868 is 86846391993.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 39919364799 and 39919364808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1859878 + ... + 1881218.

It is an arithmetic number, because the mean of its divisors is an integer number (1961842008).

Almost surely, 2^39919364868 is an apocalyptic number.

It is an amenable number.

39919364868 is an abundant number, since it is smaller than the sum of its proper divisors (54249051516).

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

39919364868 is a wasteful number, since it uses less digits than its factorization.

39919364868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23052 (or 23050 counting only the distinct ones).

The product of its digits is 60466176, while the sum is 66.

The spelling of 39919364868 in words is "thirty-nine billion, nine hundred nineteen million, three hundred sixty-four thousand, eight hundred sixty-eight".