399324 has 24 divisors (see below), whose sum is σ = 943488. Its totient is φ = 131440.

The previous prime is 399283. The next prime is 399353. The reversal of 399324 is 423993.

It is a junction number, because it is equal to n+sod(n) for n = 399291 and 399300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1129 + ... + 1439.

It is an arithmetic number, because the mean of its divisors is an integer number (39312).

2³⁹⁹³²⁴ is an apocalyptic number.

It is an amenable number.

399324 is an abundant number, since it is smaller than the sum of its proper divisors (544164).

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

399324 is a wasteful number, since it uses less digits than its factorization.

399324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 423 counting only the distinct ones).

The product of its digits is 5832, while the sum is 30.

The square root of 399324 is about 631.9208811236. The cubic root of 399324 is about 73.6390998138.

The spelling of 399324 in words is "three hundred ninety-nine thousand, three hundred twenty-four".