399274704 has 80 divisors (see below), whose sum is σ = 1153944000. Its totient is φ = 132177024.

The previous prime is 399274693. The next prime is 399274723. The reversal of 399274704 is 407472993.

It is a self number, because there is not a number n which added to its sum of digits gives 399274704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61267 + ... + 67469.

It is an arithmetic number, because the mean of its divisors is an integer number (14424300).

Almost surely, 2^399274704 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 399274704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576972000).

399274704 is an abundant number, since it is smaller than the sum of its proper divisors (754669296).

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

399274704 is a wasteful number, since it uses less digits than its factorization.

399274704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6369 (or 6357 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 399274704 is about 19981.8593729412. The cubic root of 399274704 is about 736.3606947382.

The spelling of 399274704 in words is "three hundred ninety-nine million, two hundred seventy-four thousand, seven hundred four".