399116 has 12 divisors (see below), whose sum is σ = 705432. Its totient is φ = 197568.

The previous prime is 399107. The next prime is 399131. The reversal of 399116 is 611993.

399116 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11 + ... + 893.

It is an arithmetic number, because the mean of its divisors is an integer number (58786).

2³⁹⁹¹¹⁶ is an apocalyptic number.

It is an amenable number.

399116 is a deficient number, since it is larger than the sum of its proper divisors (306316).

399116 is a wasteful number, since it uses less digits than its factorization.

399116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 998 counting only the distinct ones).

The product of its digits is 1458, while the sum is 29.

The square root of 399116 is about 631.7562821215. The cubic root of 399116 is about 73.6263118747.

It can be divided in two parts, 399 and 116, that added together give a palindrome (515).

The spelling of 399116 in words is "three hundred ninety-nine thousand, one hundred sixteen".