91403249 has 8 divisors (see below), whose sum is σ = 105224448. Its totient is φ = 77772960.

The previous prime is 91403201. The next prime is 91403261. The reversal of 91403249 is 94230419.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91403249 - 2²⁰ = 90354673 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91403749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46697 + ... + 48614.

It is an arithmetic number, because the mean of its divisors is an integer number (13153056).

Almost surely, 2^91403249 is an apocalyptic number.

It is an amenable number.

91403249 is a deficient number, since it is larger than the sum of its proper divisors (13821199).

91403249 is a wasteful number, since it uses less digits than its factorization.

91403249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95455.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 91403249 is about 9560.5046414925. The cubic root of 91403249 is about 450.4575576454.

The spelling of 91403249 in words is "ninety-one million, four hundred three thousand, two hundred forty-nine".