91895423 has 2 divisors, whose sum is σ = 91895424. Its totient is φ = 91895422.

The previous prime is 91895417. The next prime is 91895471. The reversal of 91895423 is 32459819.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91895423 - 2¹⁰ = 91894399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91895623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45947711 + 45947712.

It is an arithmetic number, because the mean of its divisors is an integer number (45947712).

Almost surely, 2^91895423 is an apocalyptic number.

91895423 is a deficient number, since it is larger than the sum of its proper divisors (1).

91895423 is an equidigital number, since it uses as much as digits as its factorization.

91895423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 41.

The square root of 91895423 is about 9586.2100435991. The cubic root of 91895423 is about 451.2646287106.

The spelling of 91895423 in words is "ninety-one million, eight hundred ninety-five thousand, four hundred twenty-three".