91314489 has 16 divisors (see below), whose sum is σ = 141987200. Its totient is φ = 52179120.

The previous prime is 91314481. The next prime is 91314493. The reversal of 91314489 is 98441319.

It is not a de Polignac number, because 91314489 - 2³ = 91314481 is a prime.

It is a super-2 number, since 2×91314489² = 16676671802662242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91314481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43342 + ... + 45399.

It is an arithmetic number, because the mean of its divisors is an integer number (8874200).

Almost surely, 2^91314489 is an apocalyptic number.

It is an amenable number.

91314489 is a deficient number, since it is larger than the sum of its proper divisors (50672711).

91314489 is an equidigital number, since it uses as much as digits as its factorization.

91314489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88765 (or 88751 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 91314489 is about 9555.8614996242. The cubic root of 91314489 is about 450.3117000952.

The spelling of 91314489 in words is "ninety-one million, three hundred fourteen thousand, four hundred eighty-nine".