396399 has 8 divisors (see below), whose sum is σ = 531760. Its totient is φ = 262656.

The previous prime is 396379. The next prime is 396413. The reversal of 396399 is 993693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 396399 - 2⁹ = 395887 is a prime.

It is a Duffinian number.

396399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396349) 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, 399 + ... + 975.

It is an arithmetic number, because the mean of its divisors is an integer number (66470).

2³⁹⁶³⁹⁹ is an apocalyptic number.

396399 is a deficient number, since it is larger than the sum of its proper divisors (135361).

396399 is a wasteful number, since it uses less digits than its factorization.

396399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809.

The product of its digits is 39366, while the sum is 39.

The square root of 396399 is about 629.6022553962. The cubic root of 396399 is about 73.4588598498.

The spelling of 396399 in words is "three hundred ninety-six thousand, three hundred ninety-nine".