386640499 has 12 divisors (see below), whose sum is σ = 457644304. Its totient is φ = 319973472.

The previous prime is 386640479. The next prime is 386640517. The reversal of 386640499 is 994046683.

It is not a de Polignac number, because 386640499 - 2¹¹ = 386638451 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386640439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26952 + ... + 38725.

Almost surely, 2^386640499 is an apocalyptic number.

386640499 is a deficient number, since it is larger than the sum of its proper divisors (71003805).

386640499 is an equidigital number, since it uses as much as digits as its factorization.

386640499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65742 (or 65713 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 386640499 is about 19663.1762185055. The cubic root of 386640499 is about 728.5104417141.

The spelling of 386640499 in words is "three hundred eighty-six million, six hundred forty thousand, four hundred ninety-nine".