91344199 has 2 divisors, whose sum is σ = 91344200. Its totient is φ = 91344198.

The previous prime is 91344181. The next prime is 91344203. The reversal of 91344199 is 99144319.

It is a strong prime.

It is an emirp because it is prime and its reverse (99144319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91344199 - 2⁹ = 91343687 is a prime.

It is a super-3 number, since 3×91344199³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91344139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45672099 + 45672100.

It is an arithmetic number, because the mean of its divisors is an integer number (45672100).

Almost surely, 2^91344199 is an apocalyptic number.

91344199 is a deficient number, since it is larger than the sum of its proper divisors (1).

91344199 is an equidigital number, since it uses as much as digits as its factorization.

91344199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 40.

The square root of 91344199 is about 9557.4159164494. The cubic root of 91344199 is about 450.3605324695.

The spelling of 91344199 in words is "ninety-one million, three hundred forty-four thousand, one hundred ninety-nine".