399306 has 16 divisors (see below), whose sum is σ = 812448. Its totient is φ = 130800.

The previous prime is 399283. The next prime is 399353. The reversal of 399306 is 603993.

It is a Curzon number.

It is an unprimeable number.

399306 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180 + ... + 911.

It is an arithmetic number, because the mean of its divisors is an integer number (50778).

2³⁹⁹³⁰⁶ is an apocalyptic number.

399306 is an abundant number, since it is smaller than the sum of its proper divisors (413142).

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

399306 is a wasteful number, since it uses less digits than its factorization.

399306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 399306 is about 631.9066386738. The cubic root of 399306 is about 73.6379933408.

The spelling of 399306 in words is "three hundred ninety-nine thousand, three hundred six".