91703089 has 2 divisors, whose sum is σ = 91703090. Its totient is φ = 91703088.

The previous prime is 91703081. The next prime is 91703099. The reversal of 91703089 is 98030719.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62726400 + 28976689 = 7920^2 + 5383^2 .

It is a cyclic number.

It is not a de Polignac number, because 91703089 - 2³ = 91703081 is a prime.

It is not a weakly prime, because it can be changed into another prime (91703081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45851544 + 45851545.

It is an arithmetic number, because the mean of its divisors is an integer number (45851545).

Almost surely, 2^91703089 is an apocalyptic number.

It is an amenable number.

91703089 is a deficient number, since it is larger than the sum of its proper divisors (1).

91703089 is an equidigital number, since it uses as much as digits as its factorization.

91703089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 91703089 is about 9576.1729829823. The cubic root of 91703089 is about 450.9495816323.

The spelling of 91703089 in words is "ninety-one million, seven hundred three thousand, eighty-nine".