399610 has 16 divisors (see below), whose sum is σ = 729000. Its totient is φ = 157696.

The previous prime is 399601. The next prime is 399613. The reversal of 399610 is 16993.

It is a happy number.

399610 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 281961 + 117649 = 531^2 + 343^2 .

It is not an unprimeable number, because it can be changed into a prime (399613) 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, 666 + ... + 1114.

2³⁹⁹⁶¹⁰ is an apocalyptic number.

399610 is a deficient number, since it is larger than the sum of its proper divisors (329390).

399610 is a wasteful number, since it uses less digits than its factorization.

399610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 399610 is about 632.1471347716. The cubic root of 399610 is about 73.6566759813.

The spelling of 399610 in words is "three hundred ninety-nine thousand, six hundred ten".