91453679 has 2 divisors, whose sum is σ = 91453680. Its totient is φ = 91453678.

The previous prime is 91453651. The next prime is 91453697. The reversal of 91453679 is 97635419.

Together with next prime (91453697) 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 91453679 - 2⁸ = 91453423 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91453619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45726839 + 45726840.

It is an arithmetic number, because the mean of its divisors is an integer number (45726840).

Almost surely, 2^91453679 is an apocalyptic number.

91453679 is a deficient number, since it is larger than the sum of its proper divisors (1).

91453679 is an equidigital number, since it uses as much as digits as its factorization.

91453679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 44.

The square root of 91453679 is about 9563.1416908880. The cubic root of 91453679 is about 450.5403862040.

The spelling of 91453679 in words is "ninety-one million, four hundred fifty-three thousand, six hundred seventy-nine".