91670959 has 2 divisors, whose sum is σ = 91670960. Its totient is φ = 91670958.

The previous prime is 91670951. The next prime is 91670963. The reversal of 91670959 is 95907619.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91670959 - 2³ = 91670951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91670951) 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, 45835479 + 45835480.

It is an arithmetic number, because the mean of its divisors is an integer number (45835480).

Almost surely, 2^91670959 is an apocalyptic number.

91670959 is a deficient number, since it is larger than the sum of its proper divisors (1).

91670959 is an equidigital number, since it uses as much as digits as its factorization.

91670959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 91670959 is about 9574.4952347369. The cubic root of 91670959 is about 450.8969090971.

It can be divided in two parts, 91670 and 959, that added together give a palindrome (92629).

The spelling of 91670959 in words is "ninety-one million, six hundred seventy thousand, nine hundred fifty-nine".