91734971 has 4 divisors (see below), whose sum is σ = 95723472. Its totient is φ = 87746472.

The previous prime is 91734961. The next prime is 91734989. The reversal of 91734971 is 17943719.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 91734971 - 2¹⁰ = 91733947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91734901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1994216 + ... + 1994261.

It is an arithmetic number, because the mean of its divisors is an integer number (23930868).

Almost surely, 2^91734971 is an apocalyptic number.

91734971 is a deficient number, since it is larger than the sum of its proper divisors (3988501).

91734971 is a wasteful number, since it uses less digits than its factorization.

91734971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988500.

The product of its digits is 47628, while the sum is 41.

The square root of 91734971 is about 9577.8374907909. The cubic root of 91734971 is about 451.0018354473.

The spelling of 91734971 in words is "ninety-one million, seven hundred thirty-four thousand, nine hundred seventy-one".