399822948 has 54 divisors (see below), whose sum is σ = 1175675046. Its totient is φ = 114234624.

The previous prime is 399822923. The next prime is 399822953. The reversal of 399822948 is 849228993.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 399680064 + 142884 = 19992^2 + 378^2 .

It is a junction number, because it is equal to n+sod(n) for n = 399822894 and 399822903.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 111565 + ... + 115092.

Almost surely, 2^399822948 is an apocalyptic number.

It is an amenable number.

399822948 is an abundant number, since it is smaller than the sum of its proper divisors (775852098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399822948 is a wasteful number, since it uses less digits than its factorization.

399822948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226681 (or 226669 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 399822948 is about 19995.5732100883. The cubic root of 399822948 is about 736.6975728271.

The spelling of 399822948 in words is "three hundred ninety-nine million, eight hundred twenty-two thousand, nine hundred forty-eight".