91435723 has 2 divisors, whose sum is σ = 91435724. Its totient is φ = 91435722.

The previous prime is 91435703. The next prime is 91435739. The reversal of 91435723 is 32753419.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91435723 is a prime.

It is not a weakly prime, because it can be changed into another prime (91435703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45717861 + 45717862.

It is an arithmetic number, because the mean of its divisors is an integer number (45717862).

Almost surely, 2^91435723 is an apocalyptic number.

91435723 is a deficient number, since it is larger than the sum of its proper divisors (1).

91435723 is an equidigital number, since it uses as much as digits as its factorization.

91435723 is an odious number, because the sum of its binary digits is odd.

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

The square root of 91435723 is about 9562.2028319839. The cubic root of 91435723 is about 450.5108979327.

The spelling of 91435723 in words is "ninety-one million, four hundred thirty-five thousand, seven hundred twenty-three".