91834243 has 4 divisors (see below), whose sum is σ = 91951720. Its totient is φ = 91716768.

The previous prime is 91834241. The next prime is 91834247. The reversal of 91834243 is 34243819.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34243819 = 587 ⋅58337.

It is a cyclic number.

It is not a de Polignac number, because 91834243 - 2¹ = 91834241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91834199 and 91834208.

It is not an unprimeable number, because it can be changed into a prime (91834241) 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, 57558 + ... + 59131.

It is an arithmetic number, because the mean of its divisors is an integer number (22987930).

Almost surely, 2^91834243 is an apocalyptic number.

91834243 is a deficient number, since it is larger than the sum of its proper divisors (117477).

91834243 is a wasteful number, since it uses less digits than its factorization.

91834243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117476.

The product of its digits is 20736, while the sum is 34.

The square root of 91834243 is about 9583.0184701899. The cubic root of 91834243 is about 451.1644623180.

The spelling of 91834243 in words is "ninety-one million, eight hundred thirty-four thousand, two hundred forty-three".