91434873 has 8 divisors (see below), whose sum is σ = 122169600. Its totient is φ = 60828368.

The previous prime is 91434829. The next prime is 91434901. The reversal of 91434873 is 37843419.

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 91434873 - 2¹³ = 91426681 is a prime.

It is a super-2 number, since 2×91434873² = 16720672001052258, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91434803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30378 + ... + 33251.

It is an arithmetic number, because the mean of its divisors is an integer number (15271200).

Almost surely, 2^91434873 is an apocalyptic number.

It is an amenable number.

91434873 is a deficient number, since it is larger than the sum of its proper divisors (30734727).

91434873 is a wasteful number, since it uses less digits than its factorization.

91434873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64111.

The product of its digits is 72576, while the sum is 39.

The square root of 91434873 is about 9562.1583860549. The cubic root of 91434873 is about 450.5095019231.

The spelling of 91434873 in words is "ninety-one million, four hundred thirty-four thousand, eight hundred seventy-three".