399246692 has 36 divisors (see below), whose sum is σ = 760827900. Its totient is φ = 182224704.

The previous prime is 399246689. The next prime is 399246713. The reversal of 399246692 is 296642993.

It can be written as a sum of positive squares in 2 ways, for example, as 52765696 + 346480996 = 7264^2 + 18614^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 399246692.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1758683 + ... + 1758909.

Almost surely, 2^399246692 is an apocalyptic number.

It is an amenable number.

399246692 is a deficient number, since it is larger than the sum of its proper divisors (361581208).

399246692 is a wasteful number, since it uses less digits than its factorization.

399246692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 391 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 50.

The square root of 399246692 is about 19981.1584248762. The cubic root of 399246692 is about 736.3434739977.

The spelling of 399246692 in words is "three hundred ninety-nine million, two hundred forty-six thousand, six hundred ninety-two".