91114189 has 2 divisors, whose sum is σ = 91114190. Its totient is φ = 91114188.

The previous prime is 91114181. The next prime is 91114211. The reversal of 91114189 is 98141119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68475625 + 22638564 = 8275^2 + 4758^2 .

It is a cyclic number.

It is not a de Polignac number, because 91114189 - 2³ = 91114181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91114181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45557094 + 45557095.

It is an arithmetic number, because the mean of its divisors is an integer number (45557095).

Almost surely, 2^91114189 is an apocalyptic number.

It is an amenable number.

91114189 is a deficient number, since it is larger than the sum of its proper divisors (1).

91114189 is an equidigital number, since it uses as much as digits as its factorization.

91114189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 34.

The square root of 91114189 is about 9545.3752676362. The cubic root of 91114189 is about 449.9822034114.

The spelling of 91114189 in words is "ninety-one million, one hundred fourteen thousand, one hundred eighty-nine".