91422895 has 4 divisors (see below), whose sum is σ = 109707480. Its totient is φ = 73138312.

The previous prime is 91422871. The next prime is 91422911. The reversal of 91422895 is 59822419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91422895 - 2⁷ = 91422767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9142285 + ... + 9142294.

It is an arithmetic number, because the mean of its divisors is an integer number (27426870).

Almost surely, 2^91422895 is an apocalyptic number.

91422895 is a deficient number, since it is larger than the sum of its proper divisors (18284585).

91422895 is a wasteful number, since it uses less digits than its factorization.

91422895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18284584.

The product of its digits is 51840, while the sum is 40.

The square root of 91422895 is about 9561.5320425129. The cubic root of 91422895 is about 450.4898287638.

The spelling of 91422895 in words is "ninety-one million, four hundred twenty-two thousand, eight hundred ninety-five".