396659 has 4 divisors (see below), whose sum is σ = 401760. Its totient is φ = 391560.

The previous prime is 396647. The next prime is 396667. The reversal of 396659 is 956693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-396659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2432 + ... + 2589.

It is an arithmetic number, because the mean of its divisors is an integer number (100440).

2³⁹⁶⁶⁵⁹ is an apocalyptic number.

396659 is a deficient number, since it is larger than the sum of its proper divisors (5101).

396659 is an equidigital number, since it uses as much as digits as its factorization.

396659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100.

The product of its digits is 43740, while the sum is 38.

The square root of 396659 is about 629.8087011149. The cubic root of 396659 is about 73.4749170122.

The spelling of 396659 in words is "three hundred ninety-six thousand, six hundred fifty-nine".