386974985 has 8 divisors (see below), whose sum is σ = 480382920. Its totient is φ = 298904704.

The previous prime is 386974981. The next prime is 386974993. The reversal of 386974985 is 589479683.

It can be written as a sum of positive squares in 4 ways, for example, as 6568969 + 380406016 = 2563^2 + 19504^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 386974985 - 2² = 386974981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (386974981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1334252 + ... + 1334541.

It is an arithmetic number, because the mean of its divisors is an integer number (60047865).

Almost surely, 2^386974985 is an apocalyptic number.

It is an amenable number.

386974985 is a deficient number, since it is larger than the sum of its proper divisors (93407935).

386974985 is a wasteful number, since it uses less digits than its factorization.

386974985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2668827.

The product of its digits is 13063680, while the sum is 59.

The square root of 386974985 is about 19671.6797706754. The cubic root of 386974985 is about 728.7204613655.

The spelling of 386974985 in words is "three hundred eighty-six million, nine hundred seventy-four thousand, nine hundred eighty-five".