386637434 has 4 divisors (see below), whose sum is σ = 579956154. Its totient is φ = 193318716.

The previous prime is 386637413. The next prime is 386637437. The reversal of 386637434 is 434736683.

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., 324180025 + 62457409 = 18005^2 + 7903^2 .

It is not an unprimeable number, because it can be changed into a prime (386637437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96659357 + ... + 96659360.

Almost surely, 2^386637434 is an apocalyptic number.

386637434 is a deficient number, since it is larger than the sum of its proper divisors (193318720).

386637434 is a wasteful number, since it uses less digits than its factorization.

386637434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193318719.

The product of its digits is 870912, while the sum is 44.

The square root of 386637434 is about 19663.0982807898. The cubic root of 386637434 is about 728.5085166783.

The spelling of 386637434 in words is "three hundred eighty-six million, six hundred thirty-seven thousand, four hundred thirty-four".