91334289 has 4 divisors (see below), whose sum is σ = 121779056. Its totient is φ = 60889524.

The previous prime is 91334281. The next prime is 91334293. The reversal of 91334289 is 98243319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 91334289 - 2³ = 91334281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91334281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15222379 + ... + 15222384.

It is an arithmetic number, because the mean of its divisors is an integer number (30444764).

Almost surely, 2^91334289 is an apocalyptic number.

It is an amenable number.

91334289 is a deficient number, since it is larger than the sum of its proper divisors (30444767).

91334289 is a wasteful number, since it uses less digits than its factorization.

91334289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30444766.

The product of its digits is 46656, while the sum is 39.

The square root of 91334289 is about 9556.8974568110. The cubic root of 91334289 is about 450.3442452309.

The spelling of 91334289 in words is "ninety-one million, three hundred thirty-four thousand, two hundred eighty-nine".