91416985 has 16 divisors (see below), whose sum is σ = 123535872. Its totient is φ = 64339200.

The previous prime is 91416967. The next prime is 91416991. The reversal of 91416985 is 58961419.

It is not a de Polignac number, because 91416985 - 2⁵ = 91416953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25104 + ... + 28513.

It is an arithmetic number, because the mean of its divisors is an integer number (7720992).

Almost surely, 2^91416985 is an apocalyptic number.

It is an amenable number.

91416985 is a deficient number, since it is larger than the sum of its proper divisors (32118887).

91416985 is a wasteful number, since it uses less digits than its factorization.

91416985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53664.

The product of its digits is 77760, while the sum is 43.

The square root of 91416985 is about 9561.2229866268. Note that the first 3 decimals coincide. The cubic root of 91416985 is about 450.4801213039.

The spelling of 91416985 in words is "ninety-one million, four hundred sixteen thousand, nine hundred eighty-five".