390875566 has 8 divisors (see below), whose sum is σ = 589351824. Its totient is φ = 194424960.

The previous prime is 390875549. The next prime is 390875567. The reversal of 390875566 is 665578093.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390875567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505930 + ... + 506701.

It is an arithmetic number, because the mean of its divisors is an integer number (73668978).

Almost surely, 2^390875566 is an apocalyptic number.

390875566 is a deficient number, since it is larger than the sum of its proper divisors (198476258).

390875566 is a wasteful number, since it uses less digits than its factorization.

390875566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012826.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 390875566 is about 19770.5732339758. The cubic root of 390875566 is about 731.1607018236.

The spelling of 390875566 in words is "three hundred ninety million, eight hundred seventy-five thousand, five hundred sixty-six".