399999902 has 16 divisors (see below), whose sum is σ = 635856480. Its totient is φ = 188068608.

The previous prime is 399999893. The next prime is 399999907. The reversal of 399999902 is 209999993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399999907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39263 + ... + 48389.

It is an arithmetic number, because the mean of its divisors is an integer number (39741030).

Almost surely, 2^399999902 is an apocalyptic number.

399999902 is a deficient number, since it is larger than the sum of its proper divisors (235856578).

399999902 is a wasteful number, since it uses less digits than its factorization.

399999902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10435.

The product of its (nonzero) digits is 3188646, while the sum is 59.

The square root of 399999902 is about 19999.9975499998. The cubic root of 399999902 is about 736.8062395556.

The spelling of 399999902 in words is "three hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred two".