91050769 has 2 divisors, whose sum is σ = 91050770. Its totient is φ = 91050768.

The previous prime is 91050733. The next prime is 91050779. The reversal of 91050769 is 96705019.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49280400 + 41770369 = 7020^2 + 6463^2 .

It is a cyclic number.

It is not a de Polignac number, because 91050769 - 2¹⁵ = 91018001 is a prime.

It is a super-2 number, since 2×91050769² = 16580485070982722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91050719) 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, 45525384 + 45525385.

It is an arithmetic number, because the mean of its divisors is an integer number (45525385).

Almost surely, 2^91050769 is an apocalyptic number.

It is an amenable number.

91050769 is a deficient number, since it is larger than the sum of its proper divisors (1).

91050769 is an equidigital number, since it uses as much as digits as its factorization.

91050769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 91050769 is about 9542.0526617704. The cubic root of 91050769 is about 449.8777758593.

It can be divided in two parts, 91050 and 769, that added together give a palindrome (91819).

The spelling of 91050769 in words is "ninety-one million, fifty thousand, seven hundred sixty-nine".