399589560 has 96 divisors (see below), whose sum is σ = 1312169040. Its totient is φ = 105449472.

The previous prime is 399589559. The next prime is 399589571. The reversal of 399589560 is 65985993.

399589560 is a `hidden beast` number, since 3 + 9 + 9 + 589 + 56 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 399589497 and 399589506.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 29199 + ... + 40641.

Almost surely, 2^399589560 is an apocalyptic number.

399589560 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399589560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (656084520).

399589560 is an abundant number, since it is smaller than the sum of its proper divisors (912579480).

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

399589560 is a wasteful number, since it uses less digits than its factorization.

399589560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11557 (or 11550 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 54.

The square root of 399589560 is about 19989.7363664457. The cubic root of 399589560 is about 736.5542011676.

The spelling of 399589560 in words is "three hundred ninety-nine million, five hundred eighty-nine thousand, five hundred sixty".