91414091 has 2 divisors, whose sum is σ = 91414092. Its totient is φ = 91414090.

The previous prime is 91414067. The next prime is 91414109. The reversal of 91414091 is 19041419.

Together with next prime (91414109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91414091 - 2²² = 87219787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91414891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45707045 + 45707046.

It is an arithmetic number, because the mean of its divisors is an integer number (45707046).

Almost surely, 2^91414091 is an apocalyptic number.

91414091 is a deficient number, since it is larger than the sum of its proper divisors (1).

91414091 is an equidigital number, since it uses as much as digits as its factorization.

91414091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 91414091 is about 9561.0716449570. The cubic root of 91414091 is about 450.4753676168.

The spelling of 91414091 in words is "ninety-one million, four hundred fourteen thousand, ninety-one".