91499605 has 8 divisors (see below), whose sum is σ = 110358072. Its totient is φ = 72827328.

The previous prime is 91499599. The next prime is 91499623. The reversal of 91499605 is 50699419.

It can be written as a sum of positive squares in 4 ways, for example, as 6140484 + 85359121 = 2478^2 + 9239^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91499605 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 45462 + ... + 47431.

It is an arithmetic number, because the mean of its divisors is an integer number (13794759).

Almost surely, 2^91499605 is an apocalyptic number.

It is an amenable number.

91499605 is a deficient number, since it is larger than the sum of its proper divisors (18858467).

91499605 is a wasteful number, since it uses less digits than its factorization.

91499605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93095.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 91499605 is about 9565.5425878515. The cubic root of 91499605 is about 450.6157906979.

The spelling of 91499605 in words is "ninety-one million, four hundred ninety-nine thousand, six hundred five".