91273943 has 2 divisors, whose sum is σ = 91273944. Its totient is φ = 91273942.

The previous prime is 91273939. The next prime is 91273957. The reversal of 91273943 is 34937219.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91273943 - 2² = 91273939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91273897 and 91273906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91273543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45636971 + 45636972.

It is an arithmetic number, because the mean of its divisors is an integer number (45636972).

Almost surely, 2^91273943 is an apocalyptic number.

91273943 is a deficient number, since it is larger than the sum of its proper divisors (1).

91273943 is an equidigital number, since it uses as much as digits as its factorization.

91273943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 91273943 is about 9553.7397389713. The cubic root of 91273943 is about 450.2450402057.

The spelling of 91273943 in words is "ninety-one million, two hundred seventy-three thousand, nine hundred forty-three".