399798910 has 16 divisors (see below), whose sum is σ = 822443616. Its totient is φ = 137073888.

The previous prime is 399798899. The next prime is 399798923. The reversal of 399798910 is 19897993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2855637 + ... + 2855776.

It is an arithmetic number, because the mean of its divisors is an integer number (51402726).

Almost surely, 2^399798910 is an apocalyptic number.

399798910 is an abundant number, since it is smaller than the sum of its proper divisors (422644706).

399798910 is a wasteful number, since it uses less digits than its factorization.

399798910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711427.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The square root of 399798910 is about 19994.9721180101. The cubic root of 399798910 is about 736.6828087161.

The spelling of 399798910 in words is "three hundred ninety-nine million, seven hundred ninety-eight thousand, nine hundred ten".