91485999 has 12 divisors (see below), whose sum is σ = 144159912. Its totient is φ = 55446000.

The previous prime is 91485971. The next prime is 91486001. The reversal of 91485999 is 99958419.

91485999 is a `hidden beast` number, since 9 + 1 + 48 + 599 + 9 = 666.

It is not a de Polignac number, because 91485999 - 2⁵ = 91485967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91485949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 461952 + ... + 462149.

It is an arithmetic number, because the mean of its divisors is an integer number (12013326).

Almost surely, 2^91485999 is an apocalyptic number.

91485999 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

91485999 is a deficient number, since it is larger than the sum of its proper divisors (52673913).

91485999 is a wasteful number, since it uses less digits than its factorization.

91485999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924118 (or 924115 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 91485999 is about 9564.8313628626. The cubic root of 91485999 is about 450.5934540536.

The spelling of 91485999 in words is "ninety-one million, four hundred eighty-five thousand, nine hundred ninety-nine".