2189329 has 2 divisors, whose sum is σ = 2189330. Its totient is φ = 2189328.

The previous prime is 2189323. The next prime is 2189333. The reversal of 2189329 is 9239812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2169729 + 19600 = 1473^2 + 140^2 .

It is a cyclic number.

It is not a de Polignac number, because 2189329 - 2³ = 2189321 is a prime.

It is a super-2 number, since 2×2189329² = 9586322940482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2189294 and 2189303.

It is not a weakly prime, because it can be changed into another prime (2189321) 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 as a sum of consecutive naturals, namely, 1094664 + 1094665.

It is an arithmetic number, because the mean of its divisors is an integer number (1094665).

2^2189329 is an apocalyptic number.

It is an amenable number.

2189329 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189329 is an equidigital number, since it uses as much as digits as its factorization.

2189329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 2189329 is about 1479.6381314362. The cubic root of 2189329 is about 129.8485217884.

The spelling of 2189329 in words is "two million, one hundred eighty-nine thousand, three hundred twenty-nine".