399580002 has 48 divisors (see below), whose sum is σ = 920431512. Its totient is φ = 124846080.

The previous prime is 399579997. The next prime is 399580031. The reversal of 399580002 is 200085993.

It can be written as a sum of positive squares in 4 ways, for example, as 394062201 + 5517801 = 19851^2 + 2349^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76102 + ... + 81182.

Almost surely, 2^399580002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399580002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (460215756).

399580002 is an abundant number, since it is smaller than the sum of its proper divisors (520851510).

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

399580002 is a wasteful number, since it uses less digits than its factorization.

399580002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5363 (or 5360 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 399580002 is about 19989.4972923283. The cubic root of 399580002 is about 736.5483284406.

The spelling of 399580002 in words is "three hundred ninety-nine million, five hundred eighty thousand, two".