91965841 has 16 divisors (see below), whose sum is σ = 101965248. Its totient is φ = 82252800.

The previous prime is 91965823. The next prime is 91965847. The reversal of 91965841 is 14856919.

It is a cyclic number.

It is not a de Polignac number, because 91965841 - 2⁹ = 91965329 is a prime.

It is a super-3 number, since 3×91965841³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (91965847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299410 + ... + 299716.

It is an arithmetic number, because the mean of its divisors is an integer number (6372828).

Almost surely, 2^91965841 is an apocalyptic number.

It is an amenable number.

91965841 is a deficient number, since it is larger than the sum of its proper divisors (9999407).

91965841 is a wasteful number, since it uses less digits than its factorization.

91965841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672.

The product of its digits is 77760, while the sum is 43.

The square root of 91965841 is about 9589.8822203404. The cubic root of 91965841 is about 451.3798649152.

The spelling of 91965841 in words is "ninety-one million, nine hundred sixty-five thousand, eight hundred forty-one".