399946704 has 20 divisors (see below), whose sum is σ = 1033195776. Its totient is φ = 133315552.

The previous prime is 399946669. The next prime is 399946711. The reversal of 399946704 is 407649993.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4166064 + ... + 4166159.

Almost surely, 2^399946704 is an apocalyptic number.

It is an amenable number.

399946704 is an abundant number, since it is smaller than the sum of its proper divisors (633249072).

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

399946704 is a wasteful number, since it uses less digits than its factorization.

399946704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8332234 (or 8332228 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 399946704 is about 19998.6675556148. The cubic root of 399946704 is about 736.7735742508.

The spelling of 399946704 in words is "three hundred ninety-nine million, nine hundred forty-six thousand, seven hundred four".