91164629 has 2 divisors, whose sum is σ = 91164630. Its totient is φ = 91164628.

The previous prime is 91164613. The next prime is 91164637. The reversal of 91164629 is 92646119.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85063729 + 6100900 = 9223^2 + 2470^2 .

It is a cyclic number.

It is not a de Polignac number, because 91164629 - 2⁴ = 91164613 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 91164592 and 91164601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91164649) 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, 45582314 + 45582315.

It is an arithmetic number, because the mean of its divisors is an integer number (45582315).

Almost surely, 2^91164629 is an apocalyptic number.

It is an amenable number.

91164629 is a deficient number, since it is larger than the sum of its proper divisors (1).

91164629 is an equidigital number, since it uses as much as digits as its factorization.

91164629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 91164629 is about 9548.0170192559. The cubic root of 91164629 is about 450.0652234678.

The spelling of 91164629 in words is "ninety-one million, one hundred sixty-four thousand, six hundred twenty-nine".