399230874 has 96 divisors (see below), whose sum is σ = 1015732224. Its totient is φ = 110972160.

The previous prime is 399230857. The next prime is 399230891. The reversal of 399230874 is 478032993.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (399230857) and next prime (399230891).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1275342 + ... + 1275654.

It is an arithmetic number, because the mean of its divisors is an integer number (10580544).

Almost surely, 2^399230874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399230874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507866112).

399230874 is an abundant number, since it is smaller than the sum of its proper divisors (616501350).

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

399230874 is a wasteful number, since it uses less digits than its factorization.

399230874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 399230874 is about 19980.7625980592. The cubic root of 399230874 is about 736.3337493211. Note that the first 3 decimals are identical.

The spelling of 399230874 in words is "three hundred ninety-nine million, two hundred thirty thousand, eight hundred seventy-four".