386404885 has 4 divisors (see below), whose sum is σ = 463685868. Its totient is φ = 309123904.

The previous prime is 386404877. The next prime is 386404901. The reversal of 386404885 is 588404683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588404683 = 179 ⋅3287177.

It can be written as a sum of positive squares in 2 ways, for example, as 151733124 + 234671761 = 12318^2 + 15319^2 .

It is a cyclic number.

It is not a de Polignac number, because 386404885 - 2³ = 386404877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38640484 + ... + 38640493.

It is an arithmetic number, because the mean of its divisors is an integer number (115921467).

Almost surely, 2^386404885 is an apocalyptic number.

It is an amenable number.

386404885 is a deficient number, since it is larger than the sum of its proper divisors (77280983).

386404885 is an equidigital number, since it uses as much as digits as its factorization.

386404885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77280982.

The product of its (nonzero) digits is 737280, while the sum is 46.

The square root of 386404885 is about 19657.1840557085. The cubic root of 386404885 is about 728.3624298546.

The spelling of 386404885 in words is "three hundred eighty-six million, four hundred four thousand, eight hundred eighty-five".