399052344 has 32 divisors (see below), whose sum is σ = 1021965840. Its totient is φ = 129772800.

The previous prime is 399052337. The next prime is 399052349. The reversal of 399052344 is 443250993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399052349) 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, 201787 + ... + 203754.

Almost surely, 2^399052344 is an apocalyptic number.

It is an amenable number.

399052344 is an abundant number, since it is smaller than the sum of its proper divisors (622913496).

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

399052344 is a wasteful number, since it uses less digits than its factorization.

399052344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405591 (or 405587 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 399052344 is about 19976.2945512925. The cubic root of 399052344 is about 736.2239738562.

The spelling of 399052344 in words is "three hundred ninety-nine million, fifty-two thousand, three hundred forty-four".