399598224 has 80 divisors (see below), whose sum is σ = 1075466880. Its totient is φ = 127733760.

The previous prime is 399598223. The next prime is 399598267. The reversal of 399598224 is 422895993.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (399598223) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 124512 + ... + 127680.

It is an arithmetic number, because the mean of its divisors is an integer number (13443336).

Almost surely, 2^399598224 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 399598224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537733440).

399598224 is an abundant number, since it is smaller than the sum of its proper divisors (675868656).

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

399598224 is a wasteful number, since it uses less digits than its factorization.

399598224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288 (or 3282 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 399598224 is about 19989.9530764832. The cubic root of 399598224 is about 736.5595245128.

The spelling of 399598224 in words is "three hundred ninety-nine million, five hundred ninety-eight thousand, two hundred twenty-four".