91134239 has 8 divisors (see below), whose sum is σ = 104678400. Its totient is φ = 77721336.

The previous prime is 91134233. The next prime is 91134247. The reversal of 91134239 is 93243119.

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

It is not a de Polignac number, because 91134239 - 2⁴ = 91134223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91134233) 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, 31319 + ... + 34104.

It is an arithmetic number, because the mean of its divisors is an integer number (13084800).

Almost surely, 2^91134239 is an apocalyptic number.

91134239 is a deficient number, since it is larger than the sum of its proper divisors (13544161).

91134239 is a wasteful number, since it uses less digits than its factorization.

91134239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65629.

The product of its digits is 5832, while the sum is 32.

The square root of 91134239 is about 9546.4254566827. The cubic root of 91134239 is about 450.0152077165.

The spelling of 91134239 in words is "ninety-one million, one hundred thirty-four thousand, two hundred thirty-nine".