399055324 has 6 divisors (see below), whose sum is σ = 698346824. Its totient is φ = 199527660.

The previous prime is 399055301. The next prime is 399055357. The reversal of 399055324 is 423550993.

It is a super-2 number, since 2×399055324² = 318490303225489952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49881912 + ... + 49881919.

Almost surely, 2^399055324 is an apocalyptic number.

It is an amenable number.

399055324 is a deficient number, since it is larger than the sum of its proper divisors (299291500).

399055324 is a wasteful number, since it uses less digits than its factorization.

399055324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99763835 (or 99763833 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 399055324 is about 19976.3691395609. The cubic root of 399055324 is about 736.2258064829.

The spelling of 399055324 in words is "three hundred ninety-nine million, fifty-five thousand, three hundred twenty-four".