91458396 has 72 divisors (see below), whose sum is σ = 250233984. Its totient is φ = 29153520.

The previous prime is 91458383. The next prime is 91458397. The reversal of 91458396 is 69385419.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91458397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20311 + ... + 24401.

It is an arithmetic number, because the mean of its divisors is an integer number (3475472).

Almost surely, 2^91458396 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 91458396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125116992).

91458396 is an abundant number, since it is smaller than the sum of its proper divisors (158775588).

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

91458396 is a wasteful number, since it uses less digits than its factorization.

91458396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133 (or 4119 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 91458396 is about 9563.3883116812. The cubic root of 91458396 is about 450.5481320650.

The spelling of 91458396 in words is "ninety-one million, four hundred fifty-eight thousand, three hundred ninety-six".