917397 has 12 divisors (see below), whose sum is σ = 1427244. Its totient is φ = 564480.

The previous prime is 917381. The next prime is 917407. The reversal of 917397 is 793719.

It can be written as a sum of positive squares in 2 ways, for example, as 221841 + 695556 = 471^2 + 834^2 .

It is not a de Polignac number, because 917397 - 2⁴ = 917381 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 917397.

It is not an unprimeable number, because it can be changed into a prime (917317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3804 + ... + 4037.

It is an arithmetic number, because the mean of its divisors is an integer number (118937).

2⁹¹⁷³⁹⁷ is an apocalyptic number.

It is an amenable number.

917397 is a deficient number, since it is larger than the sum of its proper divisors (509847).

917397 is a wasteful number, since it uses less digits than its factorization.

917397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7860 (or 7857 counting only the distinct ones).

The product of its digits is 11907, while the sum is 36.

The square root of 917397 is about 957.8084359620. The cubic root of 917397 is about 97.1670695743.

The spelling of 917397 in words is "nine hundred seventeen thousand, three hundred ninety-seven".