91495867 has 2 divisors, whose sum is σ = 91495868. Its totient is φ = 91495866.

The previous prime is 91495829. The next prime is 91495879. The reversal of 91495867 is 76859419.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91495867 - 2⁷ = 91495739 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91495867.

It is not a weakly prime, because it can be changed into another prime (91495897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45747933 + 45747934.

It is an arithmetic number, because the mean of its divisors is an integer number (45747934).

Almost surely, 2^91495867 is an apocalyptic number.

91495867 is a deficient number, since it is larger than the sum of its proper divisors (1).

91495867 is an equidigital number, since it uses as much as digits as its factorization.

91495867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 91495867 is about 9565.3471970441. The cubic root of 91495867 is about 450.6096543334.

The spelling of 91495867 in words is "ninety-one million, four hundred ninety-five thousand, eight hundred sixty-seven".