90964817 has 2 divisors, whose sum is σ = 90964818. Its totient is φ = 90964816.

The previous prime is 90964813. The next prime is 90964829. The reversal of 90964817 is 71846909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77598481 + 13366336 = 8809^2 + 3656^2 .

It is a cyclic number.

It is not a de Polignac number, because 90964817 - 2² = 90964813 is a prime.

It is not a weakly prime, because it can be changed into another prime (90964813) 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, 45482408 + 45482409.

It is an arithmetic number, because the mean of its divisors is an integer number (45482409).

Almost surely, 2^90964817 is an apocalyptic number.

It is an amenable number.

90964817 is a deficient number, since it is larger than the sum of its proper divisors (1).

90964817 is an equidigital number, since it uses as much as digits as its factorization.

90964817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 90964817 is about 9537.5477456210. The cubic root of 90964817 is about 449.7361696290.

The spelling of 90964817 in words is "ninety million, nine hundred sixty-four thousand, eight hundred seventeen".