399304244 has 12 divisors (see below), whose sum is σ = 704117568. Its totient is φ = 198127800.

The previous prime is 399304229. The next prime is 399304307. The reversal of 399304244 is 442403993.

It is a junction number, because it is equal to n+sod(n) for n = 399304198 and 399304207.

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, 380492 + ... + 381539.

It is an arithmetic number, because the mean of its divisors is an integer number (58676464).

Almost surely, 2^399304244 is an apocalyptic number.

It is an amenable number.

399304244 is a deficient number, since it is larger than the sum of its proper divisors (304813324).

399304244 is a wasteful number, since it uses less digits than its factorization.

399304244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762166 (or 762164 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 399304244 is about 19982.5985297208. The cubic root of 399304244 is about 736.3788539640.

The spelling of 399304244 in words is "three hundred ninety-nine million, three hundred four thousand, two hundred forty-four".