497945089 has 2 divisors, whose sum is σ = 497945090. Its totient is φ = 497945088.

The previous prime is 497945087. The next prime is 497945099. The reversal of 497945089 is 980549794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 478734400 + 19210689 = 21880^2 + 4383^2 .

It is a cyclic number.

It is not a de Polignac number, because 497945089 - 2¹ = 497945087 is a prime.

Together with 497945087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (497945083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248972544 + 248972545.

It is an arithmetic number, because the mean of its divisors is an integer number (248972545).

Almost surely, 2^497945089 is an apocalyptic number.

It is an amenable number.

497945089 is a deficient number, since it is larger than the sum of its proper divisors (1).

497945089 is an equidigital number, since it uses as much as digits as its factorization.

497945089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 497945089 is about 22314.6832601317. The cubic root of 497945089 is about 792.6117103785.

The spelling of 497945089 in words is "four hundred ninety-seven million, nine hundred forty-five thousand, eighty-nine".