386932985 has 4 divisors (see below), whose sum is σ = 464319588. Its totient is φ = 309546384.

The previous prime is 386932961. The next prime is 386932991. The reversal of 386932985 is 589239683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 256128016 + 130804969 = 16004^2 + 11437^2 .

It is a cyclic number.

It is not a de Polignac number, because 386932985 - 2⁶ = 386932921 is a prime.

It is a Duffinian number.

It is a Curzon 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, 38693294 + ... + 38693303.

It is an arithmetic number, because the mean of its divisors is an integer number (116079897).

Almost surely, 2^386932985 is an apocalyptic number.

It is an amenable number.

386932985 is a deficient number, since it is larger than the sum of its proper divisors (77386603).

386932985 is an equidigital number, since it uses as much as digits as its factorization.

386932985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77386602.

The product of its digits is 2799360, while the sum is 53.

The square root of 386932985 is about 19670.6122172138. The cubic root of 386932985 is about 728.6940967270.

The spelling of 386932985 in words is "three hundred eighty-six million, nine hundred thirty-two thousand, nine hundred eighty-five".