399354404 has 12 divisors (see below), whose sum is σ = 705790428. Its totient is φ = 197700000.

The previous prime is 399354383. The next prime is 399354409. The reversal of 399354404 is 404453993.

It can be written as a sum of positive squares in 2 ways, for example, as 340033600 + 59320804 = 18440^2 + 7702^2 .

It is not an unprimeable number, because it can be changed into a prime (399354409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493847 + ... + 494654.

It is an arithmetic number, because the mean of its divisors is an integer number (58815869).

Almost surely, 2^399354404 is an apocalyptic number.

It is an amenable number.

399354404 is a deficient number, since it is larger than the sum of its proper divisors (306436024).

399354404 is a wasteful number, since it uses less digits than its factorization.

399354404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988606 (or 988604 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 399354404 is about 19983.8535823299. The cubic root of 399354404 is about 736.4096869419.

The spelling of 399354404 in words is "three hundred ninety-nine million, three hundred fifty-four thousand, four hundred four".