2189197 has 4 divisors (see below), whose sum is σ = 2219260. Its totient is φ = 2159136.

The previous prime is 2189183. The next prime is 2189207. The reversal of 2189197 is 7919812.

2189197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1590121 + 599076 = 1261^2 + 774^2 .

It is a cyclic number.

It is not a de Polignac number, because 2189197 - 2¹¹ = 2187149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14922 + ... + 15067.

It is an arithmetic number, because the mean of its divisors is an integer number (554815).

2^2189197 is an apocalyptic number.

It is an amenable number.

2189197 is a deficient number, since it is larger than the sum of its proper divisors (30063).

2189197 is an equidigital number, since it uses as much as digits as its factorization.

2189197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30062.

The product of its digits is 9072, while the sum is 37.

The square root of 2189197 is about 1479.5935252629. The cubic root of 2189197 is about 129.8459121077.

The spelling of 2189197 in words is "two million, one hundred eighty-nine thousand, one hundred ninety-seven".