91259049 has 8 divisors (see below), whose sum is σ = 139061440. Its totient is φ = 52148016.

The previous prime is 91259041. The next prime is 91259053. The reversal of 91259049 is 94095219.

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

It is not a de Polignac number, because 91259049 - 2³ = 91259041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91258998 and 91259016.

It is not an unprimeable number, because it can be changed into a prime (91259041) 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, 2172814 + ... + 2172855.

It is an arithmetic number, because the mean of its divisors is an integer number (17382680).

Almost surely, 2^91259049 is an apocalyptic number.

It is an amenable number.

91259049 is a deficient number, since it is larger than the sum of its proper divisors (47802391).

91259049 is a wasteful number, since it uses less digits than its factorization.

91259049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345679.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 91259049 is about 9552.9602218370. The cubic root of 91259049 is about 450.2205486798.

The spelling of 91259049 in words is "ninety-one million, two hundred fifty-nine thousand, forty-nine".