97959817 has 4 divisors (see below), whose sum is σ = 97982356. Its totient is φ = 97937280.

The previous prime is 97959793. The next prime is 97959853. The reversal of 97959817 is 71895979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71895979 = 4219 ⋅17041.

It can be written as a sum of positive squares in 2 ways, for example, as 92371321 + 5588496 = 9611^2 + 2364^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97959817 is a prime.

It is a super-2 number, since 2×97959817² = 19192251493346978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97959857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2448 + ... + 14209.

It is an arithmetic number, because the mean of its divisors is an integer number (24495589).

Almost surely, 2^97959817 is an apocalyptic number.

It is an amenable number.

97959817 is a deficient number, since it is larger than the sum of its proper divisors (22539).

97959817 is a wasteful number, since it uses less digits than its factorization.

97959817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22538.

The product of its digits is 1428840, while the sum is 55.

The square root of 97959817 is about 9897.4651805399. The cubic root of 97959817 is about 460.9806065908.

The spelling of 97959817 in words is "ninety-seven million, nine hundred fifty-nine thousand, eight hundred seventeen".