91069291 has 2 divisors, whose sum is σ = 91069292. Its totient is φ = 91069290.

The previous prime is 91069283. The next prime is 91069301. The reversal of 91069291 is 19296019.

It is a weak prime.

It is an emirp because it is prime and its reverse (19296019) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91069291 - 2³ = 91069283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91069291.

It is not a weakly prime, because it can be changed into another prime (91069271) 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, 45534645 + 45534646.

It is an arithmetic number, because the mean of its divisors is an integer number (45534646).

Almost surely, 2^91069291 is an apocalyptic number.

91069291 is a deficient number, since it is larger than the sum of its proper divisors (1).

91069291 is an equidigital number, since it uses as much as digits as its factorization.

91069291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 91069291 is about 9543.0231583079. The cubic root of 91069291 is about 449.9082792488.

The spelling of 91069291 in words is "ninety-one million, sixty-nine thousand, two hundred ninety-one".