890122689 has 20 divisors (see below), whose sum is σ = 1330758000. Its totient is φ = 592938360.

The previous prime is 890122679. The next prime is 890122699. The reversal of 890122689 is 986221098.

It is an interprime number because it is at equal distance from previous prime (890122679) and next prime (890122699).

It is not a de Polignac number, because 890122689 - 2⁵ = 890122657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (890122679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 117754 + ... + 125084.

It is an arithmetic number, because the mean of its divisors is an integer number (66537900).

Almost surely, 2^890122689 is an apocalyptic number.

It is an amenable number.

890122689 is a deficient number, since it is larger than the sum of its proper divisors (440635311).

890122689 is a wasteful number, since it uses less digits than its factorization.

890122689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8842 (or 8833 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 890122689 is about 29834.9239818036. The cubic root of 890122689 is about 961.9443697904.

The spelling of 890122689 in words is "eight hundred ninety million, one hundred twenty-two thousand, six hundred eighty-nine".