399706004 has 12 divisors (see below), whose sum is σ = 699971328. Its totient is φ = 199714200.

The previous prime is 399706003. The next prime is 399706049. The reversal of 399706004 is 400607993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399706003) 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, 28082 + ... + 39849.

It is an arithmetic number, because the mean of its divisors is an integer number (58330944).

Almost surely, 2^399706004 is an apocalyptic number.

It is an amenable number.

399706004 is a deficient number, since it is larger than the sum of its proper divisors (300265324).

399706004 is a wasteful number, since it uses less digits than its factorization.

399706004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69406 (or 69404 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 399706004 is about 19992.6487489777. The cubic root of 399706004 is about 736.6257403970.

The spelling of 399706004 in words is "three hundred ninety-nine million, seven hundred six thousand, four".