890111089 has 8 divisors (see below), whose sum is σ = 1017598400. Its totient is φ = 762705936.

The previous prime is 890111011. The next prime is 890111093. The reversal of 890111089 is 980111098.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 890111089 - 2¹³ = 890102897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (890111099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4762 + ... + 42460.

It is an arithmetic number, because the mean of its divisors is an integer number (127199800).

Almost surely, 2^890111089 is an apocalyptic number.

It is an amenable number.

890111089 is a deficient number, since it is larger than the sum of its proper divisors (127487311).

890111089 is a wasteful number, since it uses less digits than its factorization.

890111089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41079.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 890111089 is about 29834.7295781276. The cubic root of 890111089 is about 961.9401911143.

Subtracting 890111089 from its reverse (980111098), we obtain a palindrome (90000009).

It can be divided in two parts, 89011 and 1089, that added together give a triangular number (90100 = T₄₂₄).

The spelling of 890111089 in words is "eight hundred ninety million, one hundred eleven thousand, eighty-nine".