389399170 has 8 divisors (see below), whose sum is σ = 700918524. Its totient is φ = 155759664.

The previous prime is 389399123. The next prime is 389399201. The reversal of 389399170 is 71993983.

It can be written as a sum of positive squares in 2 ways, for example, as 378263601 + 11135569 = 19449^2 + 3337^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19469949 + ... + 19469968.

Almost surely, 2^389399170 is an apocalyptic number.

389399170 is a deficient number, since it is larger than the sum of its proper divisors (311519354).

389399170 is a wasteful number, since it uses less digits than its factorization.

389399170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38939924.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 389399170 is about 19733.1996898628. The cubic root of 389399170 is about 730.2389722402.

The spelling of 389399170 in words is "three hundred eighty-nine million, three hundred ninety-nine thousand, one hundred seventy".