91995895 has 8 divisors (see below), whose sum is σ = 111792960. Its totient is φ = 72664800.

The previous prime is 91995887. The next prime is 91995913. The reversal of 91995895 is 59859919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91995895 - 2³ = 91995887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116056 + ... + 116845.

It is an arithmetic number, because the mean of its divisors is an integer number (13974120).

Almost surely, 2^91995895 is an apocalyptic number.

91995895 is a deficient number, since it is larger than the sum of its proper divisors (19797065).

91995895 is a wasteful number, since it uses less digits than its factorization.

91995895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232985.

The product of its digits is 1312200, while the sum is 55.

The square root of 91995895 is about 9591.4490563209. The cubic root of 91995895 is about 451.4290291587.

The spelling of 91995895 in words is "ninety-one million, nine hundred ninety-five thousand, eight hundred ninety-five".