97965919 has 4 divisors (see below), whose sum is σ = 103122040. Its totient is φ = 92809800.

The previous prime is 97965913. The next prime is 97965929. The reversal of 97965919 is 91956979.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97965919 - 2⁵ = 97965887 is a prime.

It is a super-2 number, since 2×97965919² = 19194642571029122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 97965919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97965913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2578032 + ... + 2578069.

It is an arithmetic number, because the mean of its divisors is an integer number (25780510).

Almost surely, 2^97965919 is an apocalyptic number.

97965919 is a deficient number, since it is larger than the sum of its proper divisors (5156121).

97965919 is a wasteful number, since it uses less digits than its factorization.

97965919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156120.

The product of its digits is 1377810, while the sum is 55.

The square root of 97965919 is about 9897.7734364856. The cubic root of 97965919 is about 460.9901780163.

The spelling of 97965919 in words is "ninety-seven million, nine hundred sixty-five thousand, nine hundred nineteen".