91457423 has 2 divisors, whose sum is σ = 91457424. Its totient is φ = 91457422.

The previous prime is 91457411. The next prime is 91457437. The reversal of 91457423 is 32475419.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91457423 - 2⁸ = 91457167 is a prime.

It is equal to p_5296643 and since 91457423 and 5296643 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91457473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45728711 + 45728712.

It is an arithmetic number, because the mean of its divisors is an integer number (45728712).

Almost surely, 2^91457423 is an apocalyptic number.

91457423 is a deficient number, since it is larger than the sum of its proper divisors (1).

91457423 is an equidigital number, since it uses as much as digits as its factorization.

91457423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 91457423 is about 9563.3374404546. The cubic root of 91457423 is about 450.5465343080.

The spelling of 91457423 in words is "ninety-one million, four hundred fifty-seven thousand, four hundred twenty-three".