396965 has 4 divisors (see below), whose sum is σ = 476364. Its totient is φ = 317568.

The previous prime is 396953. The next prime is 396971. The reversal of 396965 is 569693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 569693 = 103 ⋅5531.

It can be written as a sum of positive squares in 2 ways, for example, as 201601 + 195364 = 449^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 396965 - 2⁸ = 396709 is a prime.

It is a super-2 number, since 2×396965² = 315162422450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39692 + ... + 39701.

It is an arithmetic number, because the mean of its divisors is an integer number (119091).

2³⁹⁶⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

396965 is a deficient number, since it is larger than the sum of its proper divisors (79399).

396965 is an equidigital number, since it uses as much as digits as its factorization.

396965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79398.

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

The square root of 396965 is about 630.0515851897. The cubic root of 396965 is about 73.4938060710.

The spelling of 396965 in words is "three hundred ninety-six thousand, nine hundred sixty-five".