386931394 has 4 divisors (see below), whose sum is σ = 580397094. Its totient is φ = 193465696.

The previous prime is 386931383. The next prime is 386931437. The reversal of 386931394 is 493139683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 218892025 + 168039369 = 14795^2 + 12963^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96732847 + ... + 96732850.

Almost surely, 2^386931394 is an apocalyptic number.

386931394 is a deficient number, since it is larger than the sum of its proper divisors (193465700).

386931394 is a wasteful number, since it uses less digits than its factorization.

386931394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193465699.

The product of its digits is 419904, while the sum is 46.

The square root of 386931394 is about 19670.5717761330. The cubic root of 386931394 is about 728.6930979719.

The spelling of 386931394 in words is "three hundred eighty-six million, nine hundred thirty-one thousand, three hundred ninety-four".