3985398860238 has 32 divisors (see below), whose sum is σ = 8858306603520. Its totient is φ = 1328186583000.

The previous prime is 3985398860213. The next prime is 3985398860243. The reversal of 3985398860238 is 8320688935893.

3985398860238 is a `hidden beast` number, since 3 + 9 + 8 + 5 + 3 + 9 + 8 + 8 + 602 + 3 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7510620 + ... + 8023727.

It is an arithmetic number, because the mean of its divisors is an integer number (276822081360).

Almost surely, 2^{3985398860238} is an apocalyptic number.

3985398860238 is an abundant number, since it is smaller than the sum of its proper divisors (4872907743282).

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

3985398860238 is a wasteful number, since it uses less digits than its factorization.

3985398860238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15539109 (or 15539103 counting only the distinct ones).

The product of its (nonzero) digits is 537477120, while the sum is 72.

The spelling of 3985398860238 in words is "three trillion, nine hundred eighty-five billion, three hundred ninety-eight million, eight hundred sixty thousand, two hundred thirty-eight".