2189291 has 8 divisors (see below), whose sum is σ = 2387280. Its totient is φ = 1995552.

The previous prime is 2189287. The next prime is 2189303. The reversal of 2189291 is 1929812.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2189291 - 2² = 2189287 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 (2189221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65 + ... + 2093.

It is an arithmetic number, because the mean of its divisors is an integer number (298410).

2^2189291 is an apocalyptic number.

2189291 is a deficient number, since it is larger than the sum of its proper divisors (197989).

2189291 is a wasteful number, since it uses less digits than its factorization.

2189291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125.

The product of its digits is 2592, while the sum is 32.

The square root of 2189291 is about 1479.6252904029. The cubic root of 2189291 is about 129.8477705274.

The spelling of 2189291 in words is "two million, one hundred eighty-nine thousand, two hundred ninety-one".