890034569 has 2 divisors, whose sum is σ = 890034570. Its totient is φ = 890034568.

The previous prime is 890034559. The next prime is 890034571. The reversal of 890034569 is 965430098.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 615635344 + 274399225 = 24812^2 + 16565^2 .

It is a cyclic number.

It is not a de Polignac number, because 890034569 - 2⁴ = 890034553 is a prime.

It is a super-2 number, since 2×890034569² = 1584323068030031522, which contains 22 as substring.

Together with 890034571, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (890034559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445017284 + 445017285.

It is an arithmetic number, because the mean of its divisors is an integer number (445017285).

Almost surely, 2^890034569 is an apocalyptic number.

It is an amenable number.

890034569 is a deficient number, since it is larger than the sum of its proper divisors (1).

890034569 is an equidigital number, since it uses as much as digits as its factorization.

890034569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 890034569 is about 29833.4471524831. The cubic root of 890034569 is about 961.9126253517.

The spelling of 890034569 in words is "eight hundred ninety million, thirty-four thousand, five hundred sixty-nine".