9089045491 has 2 divisors, whose sum is σ = 9089045492. Its totient is φ = 9089045490.

The previous prime is 9089045489. The next prime is 9089045591. The reversal of 9089045491 is 1945409809.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9089045491 - 2¹ = 9089045489 is a prime.

It is a super-2 number, since 2×9089045491² (a number of 21 digits) contains 22 as substring.

Together with 9089045489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9089045591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4544522745 + 4544522746.

It is an arithmetic number, because the mean of its divisors is an integer number (4544522746).

Almost surely, 2^9089045491 is an apocalyptic number.

9089045491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9089045491 is an equidigital number, since it uses as much as digits as its factorization.

9089045491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 9089045491 is about 95336.4856232911. The cubic root of 9089045491 is about 2086.9213994253.

The spelling of 9089045491 in words is "nine billion, eighty-nine million, forty-five thousand, four hundred ninety-one".