8397965 has 8 divisors (see below), whose sum is σ = 10425240. Its totient is φ = 6486592.

The previous prime is 8397959. The next prime is 8397971. The reversal of 8397965 is 5697938.

It is an interprime number because it is at equal distance from previous prime (8397959) and next prime (8397971).

It can be written as a sum of positive squares in 4 ways, for example, as 1359556 + 7038409 = 1166^2 + 2653^2 .

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 8397965 - 2⁶ = 8397901 is a prime.

It is a super-2 number, since 2×8397965² = 141051632282450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28814 + ... + 29103.

It is an arithmetic number, because the mean of its divisors is an integer number (1303155).

Almost surely, 2^8397965 is an apocalyptic number.

It is an amenable number.

8397965 is a deficient number, since it is larger than the sum of its proper divisors (2027275).

8397965 is a wasteful number, since it uses less digits than its factorization.

8397965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57951.

The product of its digits is 408240, while the sum is 47.

The square root of 8397965 is about 2897.9242571192. The cubic root of 8397965 is about 203.2628544293.

The spelling of 8397965 in words is "eight million, three hundred ninety-seven thousand, nine hundred sixty-five".