399159704 has 8 divisors (see below), whose sum is σ = 748424460. Its totient is φ = 199579848.

The previous prime is 399159703. The next prime is 399159713. The reversal of 399159704 is 407951993.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399159703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24947474 + ... + 24947489.

Almost surely, 2^399159704 is an apocalyptic number.

It is an amenable number.

399159704 is a deficient number, since it is larger than the sum of its proper divisors (349264756).

399159704 is a wasteful number, since it uses less digits than its factorization.

399159704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49894969 (or 49894965 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 399159704 is about 19978.9815556249. The cubic root of 399159704 is about 736.2899918609.

The spelling of 399159704 in words is "three hundred ninety-nine million, one hundred fifty-nine thousand, seven hundred four".