399833752 has 32 divisors (see below), whose sum is σ = 757350000. Its totient is φ = 197884288.

The previous prime is 399833741. The next prime is 399833779. The reversal of 399833752 is 257338993.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 399833696 and 399833705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606399 + ... + 607057.

Almost surely, 2^399833752 is an apocalyptic number.

It is an amenable number.

399833752 is a deficient number, since it is larger than the sum of its proper divisors (357516248).

399833752 is a wasteful number, since it uses less digits than its factorization.

399833752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323 (or 1319 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 49.

The square root of 399833752 is about 19995.8433680603. The cubic root of 399833752 is about 736.7042084383.

The spelling of 399833752 in words is "three hundred ninety-nine million, eight hundred thirty-three thousand, seven hundred fifty-two".