890230511 has 2 divisors, whose sum is σ = 890230512. Its totient is φ = 890230510.

The previous prime is 890230489. The next prime is 890230529. The reversal of 890230511 is 115032098.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890230511 is a prime.

It is a super-2 number, since 2×890230511² = 1585020725430642242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890230711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445115255 + 445115256.

It is an arithmetic number, because the mean of its divisors is an integer number (445115256).

Almost surely, 2^890230511 is an apocalyptic number.

890230511 is a deficient number, since it is larger than the sum of its proper divisors (1).

890230511 is an equidigital number, since it uses as much as digits as its factorization.

890230511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 890230511 is about 29836.7309033681. The cubic root of 890230511 is about 961.9832088476.

The spelling of 890230511 in words is "eight hundred ninety million, two hundred thirty thousand, five hundred eleven".