91149329 has 2 divisors, whose sum is σ = 91149330. Its totient is φ = 91149328.

The previous prime is 91149307. The next prime is 91149371. The reversal of 91149329 is 92394119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89340304 + 1809025 = 9452^2 + 1345^2 .

It is an emirp because it is prime and its reverse (92394119) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91149329 - 2⁸ = 91149073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91149292 and 91149301.

It is not a weakly prime, because it can be changed into another prime (91149829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45574664 + 45574665.

It is an arithmetic number, because the mean of its divisors is an integer number (45574665).

Almost surely, 2^91149329 is an apocalyptic number.

It is an amenable number.

91149329 is a deficient number, since it is larger than the sum of its proper divisors (1).

91149329 is an equidigital number, since it uses as much as digits as its factorization.

91149329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 38.

The square root of 91149329 is about 9547.2157721505. The cubic root of 91149329 is about 450.0400441731.

The spelling of 91149329 in words is "ninety-one million, one hundred forty-nine thousand, three hundred twenty-nine".