386664920 has 16 divisors (see below), whose sum is σ = 869996160. Its totient is φ = 154665952.

The previous prime is 386664913. The next prime is 386664923. The reversal of 386664920 is 29466683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386664923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4833272 + ... + 4833351.

It is an arithmetic number, because the mean of its divisors is an integer number (54374760).

Almost surely, 2^386664920 is an apocalyptic number.

It is an amenable number.

386664920 is an abundant number, since it is smaller than the sum of its proper divisors (483331240).

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

386664920 is a wasteful number, since it uses less digits than its factorization.

386664920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9666634 (or 9666630 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 386664920 is about 19663.7971917939. The cubic root of 386664920 is about 728.5257794580.

It can be divided in two parts, 3866 and 64920, that added together give a palindrome (68786).

The spelling of 386664920 in words is "three hundred eighty-six million, six hundred sixty-four thousand, nine hundred twenty".