91964417 has 2 divisors, whose sum is σ = 91964418. Its totient is φ = 91964416.

The previous prime is 91964413. The next prime is 91964447. The reversal of 91964417 is 71446919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49336576 + 42627841 = 7024^2 + 6529^2 .

It is a cyclic number.

It is not a de Polignac number, because 91964417 - 2² = 91964413 is a prime.

It is a super-3 number, since 3×91964417³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (91964413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45982208 + 45982209.

It is an arithmetic number, because the mean of its divisors is an integer number (45982209).

Almost surely, 2^91964417 is an apocalyptic number.

It is an amenable number.

91964417 is a deficient number, since it is larger than the sum of its proper divisors (1).

91964417 is an equidigital number, since it uses as much as digits as its factorization.

91964417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 91964417 is about 9589.8079751369. The cubic root of 91964417 is about 451.3775351798.

The spelling of 91964417 in words is "ninety-one million, nine hundred sixty-four thousand, four hundred seventeen".