91448497 has 16 divisors (see below), whose sum is σ = 108870912. Its totient is φ = 75176640.

The previous prime is 91448473. The next prime is 91448537. The reversal of 91448497 is 79484419.

It is not a de Polignac number, because 91448497 - 2⁷ = 91448369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91448597) 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, 15903 + ... + 20875.

It is an arithmetic number, because the mean of its divisors is an integer number (6804432).

Almost surely, 2^91448497 is an apocalyptic number.

It is an amenable number.

91448497 is a deficient number, since it is larger than the sum of its proper divisors (17422415).

91448497 is a wasteful number, since it uses less digits than its factorization.

91448497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088.

The product of its digits is 290304, while the sum is 46.

The square root of 91448497 is about 9562.8707509827. The cubic root of 91448497 is about 450.5318764520.

The spelling of 91448497 in words is "ninety-one million, four hundred forty-eight thousand, four hundred ninety-seven".