91849275 has 72 divisors (see below), whose sum is σ = 196349040. Its totient is φ = 41973120.

The previous prime is 91849273. The next prime is 91849291. The reversal of 91849275 is 57294819.

91849275 is a `hidden beast` number, since 91 + 8 + 492 + 75 = 666.

It is not a de Polignac number, because 91849275 - 2¹ = 91849273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 91849275.

It is not an unprimeable number, because it can be changed into a prime (91849273) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 31687 + ... + 34463.

It is an arithmetic number, because the mean of its divisors is an integer number (2727070).

Almost surely, 2^91849275 is an apocalyptic number.

91849275 is an abundant number, since it is smaller than the sum of its proper divisors (104499765).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91849275 is a wasteful number, since it uses less digits than its factorization.

91849275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810 (or 2792 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 91849275 is about 9583.8027421269. The cubic root of 91849275 is about 451.1890774433.

The spelling of 91849275 in words is "ninety-one million, eight hundred forty-nine thousand, two hundred seventy-five".