91314869 has 2 divisors, whose sum is σ = 91314870. Its totient is φ = 91314868.

The previous prime is 91314829. The next prime is 91314877. The reversal of 91314869 is 96841319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65691025 + 25623844 = 8105^2 + 5062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91314869 is a prime.

It is a super-2 number, since 2×91314869² = 16676810600974322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91314829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45657434 + 45657435.

It is an arithmetic number, because the mean of its divisors is an integer number (45657435).

Almost surely, 2^91314869 is an apocalyptic number.

It is an amenable number.

91314869 is a deficient number, since it is larger than the sum of its proper divisors (1).

91314869 is an equidigital number, since it uses as much as digits as its factorization.

91314869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 41.

The square root of 91314869 is about 9555.8813826878. The cubic root of 91314869 is about 450.3123247431.

The spelling of 91314869 in words is "ninety-one million, three hundred fourteen thousand, eight hundred sixty-nine".