91414109 has 2 divisors, whose sum is σ = 91414110. Its totient is φ = 91414108.

The previous prime is 91414091. The next prime is 91414153. The reversal of 91414109 is 90141419.

Together with previous prime (91414091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56957209 + 34456900 = 7547^2 + 5870^2 .

It is a cyclic number.

It is not a de Polignac number, because 91414109 - 2⁸ = 91413853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91414159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45707054 + 45707055.

It is an arithmetic number, because the mean of its divisors is an integer number (45707055).

Almost surely, 2^91414109 is an apocalyptic number.

It is an amenable number.

91414109 is a deficient number, since it is larger than the sum of its proper divisors (1).

91414109 is an equidigital number, since it uses as much as digits as its factorization.

91414109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 91414109 is about 9561.0725862740. The cubic root of 91414109 is about 450.4753971839.

It can be divided in two parts, 9141410 and 9, that added together give a palindrome (9141419).

The spelling of 91414109 in words is "ninety-one million, four hundred fourteen thousand, one hundred nine".