399604798 has 4 divisors (see below), whose sum is σ = 599407200. Its totient is φ = 199802398.

The previous prime is 399604753. The next prime is 399604837. The reversal of 399604798 is 897406993.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99901198 + ... + 99901201.

It is an arithmetic number, because the mean of its divisors is an integer number (149851800).

Almost surely, 2^399604798 is an apocalyptic number.

399604798 is a deficient number, since it is larger than the sum of its proper divisors (199802402).

399604798 is a wasteful number, since it uses less digits than its factorization.

399604798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199802401.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 399604798 is about 19990.1175084090. The cubic root of 399604798 is about 736.5635636663.

The spelling of 399604798 in words is "three hundred ninety-nine million, six hundred four thousand, seven hundred ninety-eight".