2189841 has 4 divisors (see below), whose sum is σ = 2919792. Its totient is φ = 1459892.

The previous prime is 2189813. The next prime is 2189843. The reversal of 2189841 is 1489812.

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 2189841 - 2⁷ = 2189713 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2189843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364971 + ... + 364976.

It is an arithmetic number, because the mean of its divisors is an integer number (729948).

2^2189841 is an apocalyptic number.

It is an amenable number.

2189841 is a deficient number, since it is larger than the sum of its proper divisors (729951).

2189841 is an equidigital number, since it uses as much as digits as its factorization.

2189841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729950.

The product of its digits is 4608, while the sum is 33.

The square root of 2189841 is about 1479.8111365982. The cubic root of 2189841 is about 129.8586431941.

The spelling of 2189841 in words is "two million, one hundred eighty-nine thousand, eight hundred forty-one".