890097287 has 2 divisors, whose sum is σ = 890097288. Its totient is φ = 890097286.

The previous prime is 890097281. The next prime is 890097289. The reversal of 890097287 is 782790098.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 890097287 - 2⁸ = 890097031 is a prime.

Together with 890097289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890097281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445048643 + 445048644.

It is an arithmetic number, because the mean of its divisors is an integer number (445048644).

Almost surely, 2^890097287 is an apocalyptic number.

890097287 is a deficient number, since it is larger than the sum of its proper divisors (1).

890097287 is an equidigital number, since it uses as much as digits as its factorization.

890097287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 890097287 is about 29834.4982696207. The cubic root of 890097287 is about 961.9352191629.

The spelling of 890097287 in words is "eight hundred ninety million, ninety-seven thousand, two hundred eighty-seven".