917965797 has 24 divisors (see below), whose sum is σ = 1448730816. Its totient is φ = 506454144.

The previous prime is 917965787. The next prime is 917965843. The reversal of 917965797 is 797569719.

It is not a de Polignac number, because 917965797 - 2¹⁹ = 917441509 is a prime.

It is a super-2 number, since 2×917965797² = 1685322408923690418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 917965797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (917965717) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8328 + ... + 43649.

It is an arithmetic number, because the mean of its divisors is an integer number (60363784).

Almost surely, 2^917965797 is an apocalyptic number.

It is an amenable number.

917965797 is a deficient number, since it is larger than the sum of its proper divisors (530765019).

917965797 is a wasteful number, since it uses less digits than its factorization.

917965797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52045 (or 52016 counting only the distinct ones).

The product of its digits is 7501410, while the sum is 60.

The square root of 917965797 is about 30297.9503762218. The cubic root of 917965797 is about 971.8714700326.

The spelling of 917965797 in words is "nine hundred seventeen million, nine hundred sixty-five thousand, seven hundred ninety-seven".