91198464 has 88 divisors (see below), whose sum is σ = 277867968. Its totient is φ = 26050560.

The previous prime is 91198453. The next prime is 91198487. The reversal of 91198464 is 46489119.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19384 + ... + 23624.

Almost surely, 2^91198464 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 91198464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138933984).

91198464 is an abundant number, since it is smaller than the sum of its proper divisors (186669504).

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

91198464 is a wasteful number, since it uses less digits than its factorization.

91198464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271 (or 4253 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 91198464 is about 9549.7886887617. The cubic root of 91198464 is about 450.1208959125.

The spelling of 91198464 in words is "ninety-one million, one hundred ninety-eight thousand, four hundred sixty-four".