890051089 has 2 divisors, whose sum is σ = 890051090. Its totient is φ = 890051088.

The previous prime is 890051069. The next prime is 890051111. The reversal of 890051089 is 980150098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 789891025 + 100160064 = 28105^2 + 10008^2 .

It is a cyclic number.

It is not a de Polignac number, because 890051089 - 2¹⁵ = 890018321 is a prime.

It is not a weakly prime, because it can be changed into another prime (890051039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445025544 + 445025545.

It is an arithmetic number, because the mean of its divisors is an integer number (445025545).

Almost surely, 2^890051089 is an apocalyptic number.

It is an amenable number.

890051089 is a deficient number, since it is larger than the sum of its proper divisors (1).

890051089 is an equidigital number, since it uses as much as digits as its factorization.

890051089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 890051089 is about 29833.7240216504. The cubic root of 890051089 is about 961.9185766929.

Subtracting 890051089 from its reverse (980150098), we obtain a palindrome (90099009).

The spelling of 890051089 in words is "eight hundred ninety million, fifty-one thousand, eighty-nine".