2189569 has 4 divisors (see below), whose sum is σ = 2220480. Its totient is φ = 2158660.

The previous prime is 2189563. The next prime is 2189573. The reversal of 2189569 is 9659812.

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 2189569 - 2¹⁵ = 2156801 is a prime.

It is a super-2 number, since 2×2189569² = 9588424811522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2189563) 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, 15349 + ... + 15490.

It is an arithmetic number, because the mean of its divisors is an integer number (555120).

2^2189569 is an apocalyptic number.

It is an amenable number.

2189569 is a deficient number, since it is larger than the sum of its proper divisors (30911).

2189569 is an equidigital number, since it uses as much as digits as its factorization.

2189569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30910.

The product of its digits is 38880, while the sum is 40.

The square root of 2189569 is about 1479.7192301244. The cubic root of 2189569 is about 129.8532663938.

The spelling of 2189569 in words is "two million, one hundred eighty-nine thousand, five hundred sixty-nine".