399600044 has 12 divisors (see below), whose sum is σ = 721858368. Its totient is φ = 193354800.

The previous prime is 399600043. The next prime is 399600049. The reversal of 399600044 is 440006993.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 399599977 and 399600013.

It is not an unprimeable number, because it can be changed into a prime (399600043) 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, 1611167 + ... + 1611414.

It is an arithmetic number, because the mean of its divisors is an integer number (60154864).

Almost surely, 2^399600044 is an apocalyptic number.

It is an amenable number.

399600044 is a deficient number, since it is larger than the sum of its proper divisors (322258324).

399600044 is a wasteful number, since it uses less digits than its factorization.

399600044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222616 (or 3222614 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 399600044 is about 19989.9985992996. The cubic root of 399600044 is about 736.5606427495.

The spelling of 399600044 in words is "three hundred ninety-nine million, six hundred thousand, forty-four".