39385442888 has 24 divisors (see below), whose sum is σ = 81171446790. Its totient is φ = 17902473600.

The previous prime is 39385442849. The next prime is 39385442897. The reversal of 39385442888 is 88824458393.

It can be written as a sum of positive squares in only one way, i.e., 31045735204 + 8339707684 = 176198^2 + 91322^2 .

It is a super-2 number, since 2×39385442888² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 39385442888.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20342753 + ... + 20344688.

Almost surely, 2^39385442888 is an apocalyptic number.

It is an amenable number.

39385442888 is an abundant number, since it is smaller than the sum of its proper divisors (41786003902).

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

39385442888 is a wasteful number, since it uses less digits than its factorization.

39385442888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40687469 (or 40687454 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 62.

The spelling of 39385442888 in words is "thirty-nine billion, three hundred eighty-five million, four hundred forty-two thousand, eight hundred eighty-eight".