398922566 has 8 divisors (see below), whose sum is σ = 683867280. Its totient is φ = 170966808.

The previous prime is 398922553. The next prime is 398922593. The reversal of 398922566 is 665229893.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14247221 + ... + 14247248.

It is an arithmetic number, because the mean of its divisors is an integer number (85483410).

Almost surely, 2^398922566 is an apocalyptic number.

398922566 is a deficient number, since it is larger than the sum of its proper divisors (284944714).

398922566 is a wasteful number, since it uses less digits than its factorization.

398922566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28494478.

The product of its digits is 1399680, while the sum is 50.

The square root of 398922566 is about 19973.0459870296. The cubic root of 398922566 is about 736.1441547248.

The spelling of 398922566 in words is "three hundred ninety-eight million, nine hundred twenty-two thousand, five hundred sixty-six".