38987917400 has 48 divisors (see below), whose sum is σ = 90708803640. Its totient is φ = 15584518400.

The previous prime is 38987917349. The next prime is 38987917447. The reversal of 38987917400 is 471978983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230387 + ... + 362013.

Almost surely, 2^38987917400 is an apocalyptic number.

It is an amenable number.

38987917400 is an abundant number, since it is smaller than the sum of its proper divisors (51720886240).

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

38987917400 is a wasteful number, since it uses less digits than its factorization.

38987917400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133124 (or 133115 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 56.

The spelling of 38987917400 in words is "thirty-eight billion, nine hundred eighty-seven million, nine hundred seventeen thousand, four hundred".