390189117 has 16 divisors (see below), whose sum is σ = 554375232. Its totient is φ = 243260160.

The previous prime is 390189109. The next prime is 390189119. The reversal of 390189117 is 711981093.

It is not a de Polignac number, because 390189117 - 2³ = 390189109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390189119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16359 + ... + 32372.

It is an arithmetic number, because the mean of its divisors is an integer number (34648452).

Almost surely, 2^390189117 is an apocalyptic number.

It is an amenable number.

390189117 is a deficient number, since it is larger than the sum of its proper divisors (164186115).

390189117 is a wasteful number, since it uses less digits than its factorization.

390189117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48908.

The product of its (nonzero) digits is 13608, while the sum is 39.

The square root of 390189117 is about 19753.2052335817. The cubic root of 390189117 is about 730.7324337034.

The spelling of 390189117 in words is "three hundred ninety million, one hundred eighty-nine thousand, one hundred seventeen".