386687885 has 16 divisors (see below), whose sum is σ = 480619440. Its totient is φ = 298314240.

The previous prime is 386687869. The next prime is 386687911. The reversal of 386687885 is 588786683.

It can be written as a sum of positive squares in 8 ways, for example, as 24661156 + 362026729 = 4966^2 + 19027^2 .

It is not a de Polignac number, because 386687885 - 2⁴ = 386687869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206855 + ... + 208715.

It is an arithmetic number, because the mean of its divisors is an integer number (30038715).

Almost surely, 2^386687885 is an apocalyptic number.

It is an amenable number.

386687885 is a deficient number, since it is larger than the sum of its proper divisors (93931555).

386687885 is a wasteful number, since it uses less digits than its factorization.

386687885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3328.

The product of its digits is 15482880, while the sum is 59.

The square root of 386687885 is about 19664.3811242561. The cubic root of 386687885 is about 728.5402021640.

The spelling of 386687885 in words is "three hundred eighty-six million, six hundred eighty-seven thousand, eight hundred eighty-five".