396905 has 8 divisors (see below), whose sum is σ = 480192. Its totient is φ = 314928.

The previous prime is 396887. The next prime is 396919. The reversal of 396905 is 509693.

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

It is a cyclic number.

It is not a de Polignac number, because 396905 - 2¹² = 392809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572 + ... + 1058.

It is an arithmetic number, because the mean of its divisors is an integer number (60024).

2³⁹⁶⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

396905 is a deficient number, since it is larger than the sum of its proper divisors (83287).

396905 is a wasteful number, since it uses less digits than its factorization.

396905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 396905 is about 630.0039682415. The cubic root of 396905 is about 73.4901030992.

The spelling of 396905 in words is "three hundred ninety-six thousand, nine hundred five".