399602345328 has 120 divisors (see below), whose sum is σ = 1163532418048. Its totient is φ = 132766506432.

The previous prime is 399602345309. The next prime is 399602345339. The reversal of 399602345328 is 823543206993.

It is a happy number.

399602345328 is a `hidden beast` number, since 3 + 9 + 9 + 602 + 3 + 4 + 5 + 3 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1026225 + ... + 1361007.

Almost surely, 2^399602345328 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 399602345328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581766209024).

399602345328 is an abundant number, since it is smaller than the sum of its proper divisors (763930072720).

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

399602345328 is a wasteful number, since it uses less digits than its factorization.

399602345328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335113 (or 335095 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 399602345328 in words is "three hundred ninety-nine billion, six hundred two million, three hundred forty-five thousand, three hundred twenty-eight".