399822897 has 8 divisors (see below), whose sum is σ = 533680960. Its totient is φ = 266256720.

The previous prime is 399822877. The next prime is 399822911. The reversal of 399822897 is 798228993.

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

It is not a de Polignac number, because 399822897 - 2¹¹ = 399820849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (399822827) 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, 69754 + ... + 75267.

It is an arithmetic number, because the mean of its divisors is an integer number (66710120).

Almost surely, 2^399822897 is an apocalyptic number.

It is an amenable number.

399822897 is a deficient number, since it is larger than the sum of its proper divisors (133858063).

399822897 is a wasteful number, since it uses less digits than its factorization.

399822897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145943.

The product of its digits is 3919104, while the sum is 57.

The square root of 399822897 is about 19995.5719348060. The cubic root of 399822897 is about 736.6975415036.

The spelling of 399822897 in words is "three hundred ninety-nine million, eight hundred twenty-two thousand, eight hundred ninety-seven".