388917870404 has 18 divisors (see below), whose sum is σ = 791725665150. Its totient is φ = 166679087232.

The previous prime is 388917870269. The next prime is 388917870433. The reversal of 388917870404 is 404078719883.

It can be written as a sum of positive squares in only one way, i.e., 198514802500 + 190403067904 = 445550^2 + 436352^2 .

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, 992137229 + ... + 992137620.

It is an arithmetic number, because the mean of its divisors is an integer number (43984759175).

Almost surely, 2^388917870404 is an apocalyptic number.

It is an amenable number.

388917870404 is an abundant number, since it is smaller than the sum of its proper divisors (402807794746).

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

388917870404 is a wasteful number, since it uses less digits than its factorization.

388917870404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984274867 (or 1984274858 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 59.

The spelling of 388917870404 in words is "three hundred eighty-eight billion, nine hundred seventeen million, eight hundred seventy thousand, four hundred four".