91454423 has 2 divisors, whose sum is σ = 91454424. Its totient is φ = 91454422.

The previous prime is 91454411. The next prime is 91454431. The reversal of 91454423 is 32445419.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91454423 - 2⁶ = 91454359 is a prime.

It is a super-2 number, since 2×91454423² = 16727822972525858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 91454423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91454453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45727211 + 45727212.

It is an arithmetic number, because the mean of its divisors is an integer number (45727212).

Almost surely, 2^91454423 is an apocalyptic number.

91454423 is a deficient number, since it is larger than the sum of its proper divisors (1).

91454423 is an equidigital number, since it uses as much as digits as its factorization.

91454423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 91454423 is about 9563.1805901593. The cubic root of 91454423 is about 450.5416079559.

The spelling of 91454423 in words is "ninety-one million, four hundred fifty-four thousand, four hundred twenty-three".