91298969 has 2 divisors, whose sum is σ = 91298970. Its totient is φ = 91298968.

The previous prime is 91298951. The next prime is 91299001. The reversal of 91298969 is 96989219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67043344 + 24255625 = 8188^2 + 4925^2 .

It is an emirp because it is prime and its reverse (96989219) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91298969 - 2²⁴ = 74521753 is a prime.

It is a super-2 number, since 2×91298969² = 16671003480925922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91298969.

It is not a weakly prime, because it can be changed into another prime (91298939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45649484 + 45649485.

It is an arithmetic number, because the mean of its divisors is an integer number (45649485).

Almost surely, 2^91298969 is an apocalyptic number.

It is an amenable number.

91298969 is a deficient number, since it is larger than the sum of its proper divisors (1).

91298969 is an equidigital number, since it uses as much as digits as its factorization.

91298969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 629856, while the sum is 53.

The square root of 91298969 is about 9555.0493980931. The cubic root of 91298969 is about 450.2861866794.

The spelling of 91298969 in words is "ninety-one million, two hundred ninety-eight thousand, nine hundred sixty-nine".