386900391 has 8 divisors (see below), whose sum is σ = 516081904. Its totient is φ = 257826240.

The previous prime is 386900387. The next prime is 386900419. The reversal of 386900391 is 193009683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 386900391 - 2² = 386900387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386900191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18016 + ... + 33141.

It is an arithmetic number, because the mean of its divisors is an integer number (64510238).

Almost surely, 2^386900391 is an apocalyptic number.

386900391 is a deficient number, since it is larger than the sum of its proper divisors (129181513).

386900391 is a wasteful number, since it uses less digits than its factorization.

386900391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53681.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 386900391 is about 19669.7837049623. The cubic root of 386900391 is about 728.6736351973.

The spelling of 386900391 in words is "three hundred eighty-six million, nine hundred thousand, three hundred ninety-one".