91453723 has 2 divisors, whose sum is σ = 91453724. Its totient is φ = 91453722.

The previous prime is 91453721. The next prime is 91453729. The reversal of 91453723 is 32735419.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91453723 - 2¹ = 91453721 is a prime.

Together with 91453721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (91453721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45726861 + 45726862.

It is an arithmetic number, because the mean of its divisors is an integer number (45726862).

Almost surely, 2^91453723 is an apocalyptic number.

91453723 is a deficient number, since it is larger than the sum of its proper divisors (1).

91453723 is an equidigital number, since it uses as much as digits as its factorization.

91453723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 91453723 is about 9563.1439913869. The cubic root of 91453723 is about 450.5404584583.

The spelling of 91453723 in words is "ninety-one million, four hundred fifty-three thousand, seven hundred twenty-three".