91160969 has 2 divisors, whose sum is σ = 91160970. Its totient is φ = 91160968.

The previous prime is 91160929. The next prime is 91161019. The reversal of 91160969 is 96906119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84400969 + 6760000 = 9187^2 + 2600^2 .

It is an emirp because it is prime and its reverse (96906119) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91160969 is a prime.

It is a super-2 number, since 2×91160969² = 16620644538037922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (91160929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45580484 + 45580485.

It is an arithmetic number, because the mean of its divisors is an integer number (45580485).

Almost surely, 2^91160969 is an apocalyptic number.

It is an amenable number.

91160969 is a deficient number, since it is larger than the sum of its proper divisors (1).

91160969 is an equidigital number, since it uses as much as digits as its factorization.

91160969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 91160969 is about 9547.8253544983. The cubic root of 91160969 is about 450.0592004419.

It can be divided in two parts, 91160 and 969, that added together give a palindrome (92129).

The spelling of 91160969 in words is "ninety-one million, one hundred sixty thousand, nine hundred sixty-nine".