386139404 has 72 divisors (see below), whose sum is σ = 810819072. Its totient is φ = 160356000.

The previous prime is 386139373. The next prime is 386139407. The reversal of 386139404 is 404931683.

It is not an unprimeable number, because it can be changed into a prime (386139407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1538279 + ... + 1538529.

It is an arithmetic number, because the mean of its divisors is an integer number (11261376).

Almost surely, 2^386139404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386139404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405409536).

386139404 is an abundant number, since it is smaller than the sum of its proper divisors (424679668).

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

386139404 is a wasteful number, since it uses less digits than its factorization.

386139404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 386139404 is about 19650.4301225189. The cubic root of 386139404 is about 728.1955835447.

The spelling of 386139404 in words is "three hundred eighty-six million, one hundred thirty-nine thousand, four hundred four".