399246524 has 24 divisors (see below), whose sum is σ = 708986880. Its totient is φ = 196694784.

The previous prime is 399246511. The next prime is 399246557. The reversal of 399246524 is 425642993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109637 + ... + 113219.

It is an arithmetic number, because the mean of its divisors is an integer number (29541120).

Almost surely, 2^399246524 is an apocalyptic number.

It is an amenable number.

399246524 is a deficient number, since it is larger than the sum of its proper divisors (309740356).

399246524 is a wasteful number, since it uses less digits than its factorization.

399246524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989 (or 3987 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The square root of 399246524 is about 19981.1542209153. The cubic root of 399246524 is about 736.3433707151.

The spelling of 399246524 in words is "three hundred ninety-nine million, two hundred forty-six thousand, five hundred twenty-four".