2122889 has 4 divisors (see below), whose sum is σ = 2234640. Its totient is φ = 2011140.

The previous prime is 2122873. The next prime is 2122921. The reversal of 2122889 is 9882212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2122889 - 2⁴ = 2122873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2122859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55847 + ... + 55884.

It is an arithmetic number, because the mean of its divisors is an integer number (558660).

2^2122889 is an apocalyptic number.

It is an amenable number.

2122889 is a deficient number, since it is larger than the sum of its proper divisors (111751).

2122889 is a wasteful number, since it uses less digits than its factorization.

2122889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111750.

The product of its digits is 4608, while the sum is 32.

The square root of 2122889 is about 1457.0137267713. The cubic root of 2122889 is about 128.5214930715.

The spelling of 2122889 in words is "two million, one hundred twenty-two thousand, eight hundred eighty-nine".