91455489 has 12 divisors (see below), whose sum is σ = 132210000. Its totient is φ = 60920664.

The previous prime is 91455479. The next prime is 91455491. The reversal of 91455489 is 98455419.

91455489 is a `hidden beast` number, since 9 + 14 + 554 + 89 = 666.

It is not a de Polignac number, because 91455489 - 2⁵ = 91455457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91455439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10102 + ... + 16880.

It is an arithmetic number, because the mean of its divisors is an integer number (11017500).

It is a Proth number, since it is equal to 2791 ⋅ 2¹⁵ + 1 and 2791 < 2¹⁵.

Almost surely, 2^91455489 is an apocalyptic number.

It is an amenable number.

91455489 is a deficient number, since it is larger than the sum of its proper divisors (40754511).

91455489 is a wasteful number, since it uses less digits than its factorization.

91455489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284 (or 8281 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 91455489 is about 9563.2363245922. The cubic root of 91455489 is about 450.5433584654.

The spelling of 91455489 in words is "ninety-one million, four hundred fifty-five thousand, four hundred eighty-nine".