91100985 has 8 divisors (see below), whose sum is σ = 145761600. Its totient is φ = 48587184.

The previous prime is 91100963. The next prime is 91101013. The reversal of 91100985 is 58900119.

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

It is not a de Polignac number, because 91100985 - 2⁷ = 91100857 is a prime.

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, 3036685 + ... + 3036714.

It is an arithmetic number, because the mean of its divisors is an integer number (18220200).

Almost surely, 2^91100985 is an apocalyptic number.

It is an amenable number.

91100985 is a deficient number, since it is larger than the sum of its proper divisors (54660615).

91100985 is a wasteful number, since it uses less digits than its factorization.

91100985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6073407.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 91100985 is about 9544.6835987370. The cubic root of 91100985 is about 449.9604656627.

The spelling of 91100985 in words is "ninety-one million, one hundred thousand, nine hundred eighty-five".