91098792 has 48 divisors (see below), whose sum is σ = 248931540. Its totient is φ = 30094848.

The previous prime is 91098781. The next prime is 91098829. The reversal of 91098792 is 29789019.

It can be written as a sum of positive squares in 2 ways, for example, as 72488196 + 18610596 = 8514^2 + 4314^2 .

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 11 ways as a sum of consecutive naturals, for example, 2538 + ... + 13734.

Almost surely, 2^91098792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91098792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124465770).

91098792 is an abundant number, since it is smaller than the sum of its proper divisors (157832748).

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

91098792 is a wasteful number, since it uses less digits than its factorization.

91098792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11322 (or 11315 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 91098792 is about 9544.5687173387. The cubic root of 91098792 is about 449.9568551228.

The spelling of 91098792 in words is "ninety-one million, ninety-eight thousand, seven hundred ninety-two".