396491 has 8 divisors (see below), whose sum is σ = 426384. Its totient is φ = 367360.

The previous prime is 396479. The next prime is 396509. The reversal of 396491 is 194693.

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 396491 - 2⁶ = 396427 is a prime.

It is a super-2 number, since 2×396491² = 314410226162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396091) 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, 1271 + ... + 1551.

It is an arithmetic number, because the mean of its divisors is an integer number (53298).

2³⁹⁶⁴⁹¹ is an apocalyptic number.

396491 is a deficient number, since it is larger than the sum of its proper divisors (29893).

396491 is a wasteful number, since it uses less digits than its factorization.

396491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381.

The product of its digits is 5832, while the sum is 32.

The square root of 396491 is about 629.6753131575. The cubic root of 396491 is about 73.4645424174.

The spelling of 396491 in words is "three hundred ninety-six thousand, four hundred ninety-one".