386645994 has 64 divisors (see below), whose sum is σ = 1039737600. Its totient is φ = 103970304.

The previous prime is 386645989. The next prime is 386646047. The reversal of 386645994 is 499546683.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 386645994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23659 + ... + 36510.

It is an arithmetic number, because the mean of its divisors is an integer number (16245900).

Almost surely, 2^386645994 is an apocalyptic number.

386645994 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

386645994 is an abundant number, since it is smaller than the sum of its proper divisors (653091606).

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

386645994 is a wasteful number, since it uses less digits than its factorization.

386645994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60204 (or 60198 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 386645994 is about 19663.3159461979. The cubic root of 386645994 is about 728.5138929355.

The spelling of 386645994 in words is "three hundred eighty-six million, six hundred forty-five thousand, nine hundred ninety-four".