91197414 has 96 divisors (see below), whose sum is σ = 255580416. Its totient is φ = 23677920.

The previous prime is 91197409. The next prime is 91197419. The reversal of 91197414 is 41479119.

It is an interprime number because it is at equal distance from previous prime (91197409) and next prime (91197419).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91197419) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36204 + ... + 38640.

It is an arithmetic number, because the mean of its divisors is an integer number (2662296).

Almost surely, 2^91197414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91197414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127790208).

91197414 is an abundant number, since it is smaller than the sum of its proper divisors (164383002).

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

91197414 is a wasteful number, since it uses less digits than its factorization.

91197414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472 (or 2460 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 91197414 is about 9549.7337135650. The cubic root of 91197414 is about 450.1191684392.

The spelling of 91197414 in words is "ninety-one million, one hundred ninety-seven thousand, four hundred fourteen".