390108986 has 16 divisors (see below), whose sum is σ = 619423200. Its totient is φ = 183947568.

The previous prime is 390108967. The next prime is 390108989. The reversal of 390108986 is 689801093.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (390108989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75716 + ... + 80703.

It is an arithmetic number, because the mean of its divisors is an integer number (38713950).

Almost surely, 2^390108986 is an apocalyptic number.

390108986 is a deficient number, since it is larger than the sum of its proper divisors (229314214).

390108986 is a wasteful number, since it uses less digits than its factorization.

390108986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156493.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 390108986 is about 19751.1768256983. The cubic root of 390108986 is about 730.6824081073.

The spelling of 390108986 in words is "three hundred ninety million, one hundred eight thousand, nine hundred eighty-six".