399353504 has 48 divisors (see below), whose sum is σ = 868099680. Its totient is φ = 179324160.

The previous prime is 399353503. The next prime is 399353551. The reversal of 399353504 is 405353993.

It is not an unprimeable number, because it can be changed into a prime (399353503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22382 + ... + 36050.

It is an arithmetic number, because the mean of its divisors is an integer number (18085410).

Almost surely, 2^399353504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399353504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (434049840).

399353504 is an abundant number, since it is smaller than the sum of its proper divisors (468746176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399353504 is a wasteful number, since it uses less digits than its factorization.

399353504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13773 (or 13765 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 41.

The square root of 399353504 is about 19983.8310641378. The cubic root of 399353504 is about 736.4091337414.

The spelling of 399353504 in words is "three hundred ninety-nine million, three hundred fifty-three thousand, five hundred four".