388452861 has 16 divisors (see below), whose sum is σ = 581077120. Its totient is φ = 256452480.

The previous prime is 388452829. The next prime is 388452877. The reversal of 388452861 is 168254883.

It is not a de Polignac number, because 388452861 - 2⁵ = 388452829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388452811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67060 + ... + 72621.

It is an arithmetic number, because the mean of its divisors is an integer number (36317320).

Almost surely, 2^388452861 is an apocalyptic number.

It is an amenable number.

388452861 is a deficient number, since it is larger than the sum of its proper divisors (192624259).

388452861 is a wasteful number, since it uses less digits than its factorization.

388452861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139793 (or 139787 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 388452861 is about 19709.2075183149. The cubic root of 388452861 is about 729.6469557026.

The spelling of 388452861 in words is "three hundred eighty-eight million, four hundred fifty-two thousand, eight hundred sixty-one".