91382843 has 2 divisors, whose sum is σ = 91382844. Its totient is φ = 91382842.

The previous prime is 91382831. The next prime is 91382861. The reversal of 91382843 is 34828319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91382843 - 2²⁰ = 90334267 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91382797 and 91382806.

It is not a weakly prime, because it can be changed into another prime (91382813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45691421 + 45691422.

It is an arithmetic number, because the mean of its divisors is an integer number (45691422).

Almost surely, 2^91382843 is an apocalyptic number.

91382843 is a deficient number, since it is larger than the sum of its proper divisors (1).

91382843 is an equidigital number, since it uses as much as digits as its factorization.

91382843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 91382843 is about 9559.4373788419. The cubic root of 91382843 is about 450.4240332315.

The spelling of 91382843 in words is "ninety-one million, three hundred eighty-two thousand, eight hundred forty-three".