91340369 has 2 divisors, whose sum is σ = 91340370. Its totient is φ = 91340368.

The previous prime is 91340351. The next prime is 91340387. The reversal of 91340369 is 96304319.

It is a balanced prime because it is at equal distance from previous prime (91340351) and next prime (91340387).

It can be written as a sum of positive squares in only one way, i.e., 63123025 + 28217344 = 7945^2 + 5312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91340369 is a prime.

It is a super-2 number, since 2×91340369² = 16686126018112322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (91340339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45670184 + 45670185.

It is an arithmetic number, because the mean of its divisors is an integer number (45670185).

Almost surely, 2^91340369 is an apocalyptic number.

It is an amenable number.

91340369 is a deficient number, since it is larger than the sum of its proper divisors (1).

91340369 is an equidigital number, since it uses as much as digits as its factorization.

91340369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 91340369 is about 9557.2155463817. The cubic root of 91340369 is about 450.3542379448.

The spelling of 91340369 in words is "ninety-one million, three hundred forty thousand, three hundred sixty-nine".