399108 has 24 divisors (see below), whose sum is σ = 945280. Its totient is φ = 131040.

The previous prime is 399107. The next prime is 399131. The reversal of 399108 is 801993.

It is a happy number.

399108 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (399101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738 + ... + 1158.

2³⁹⁹¹⁰⁸ is an apocalyptic number.

It is an amenable number.

399108 is an abundant number, since it is smaller than the sum of its proper divisors (546172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399108 is a wasteful number, since it uses less digits than its factorization.

399108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 399108 is about 631.7499505342. The cubic root of 399108 is about 73.6258199422.

The spelling of 399108 in words is "three hundred ninety-nine thousand, one hundred eight".