386578897 has 4 divisors (see below), whose sum is σ = 399049216. Its totient is φ = 374108580.

The previous prime is 386578889. The next prime is 386578919. The reversal of 386578897 is 798875683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 798875683 = 233 ⋅3428651.

It is a cyclic number.

It is not a de Polignac number, because 386578897 - 2³ = 386578889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (386578817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6235113 + ... + 6235174.

It is an arithmetic number, because the mean of its divisors is an integer number (99762304).

Almost surely, 2^386578897 is an apocalyptic number.

It is an amenable number.

386578897 is a deficient number, since it is larger than the sum of its proper divisors (12470319).

386578897 is a wasteful number, since it uses less digits than its factorization.

386578897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12470318.

The product of its digits is 20321280, while the sum is 61.

The square root of 386578897 is about 19661.6097255540. The cubic root of 386578897 is about 728.4717493681.

The spelling of 386578897 in words is "three hundred eighty-six million, five hundred seventy-eight thousand, eight hundred ninety-seven".