2189834 has 8 divisors (see below), whose sum is σ = 3304260. Its totient is φ = 1088416.

The previous prime is 2189813. The next prime is 2189843. The reversal of 2189834 is 4389812.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1890625 + 299209 = 1375^2 + 547^2 .

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

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2189794 and 2189803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2819 + ... + 3510.

2^2189834 is an apocalyptic number.

2189834 is a deficient number, since it is larger than the sum of its proper divisors (1114426).

2189834 is a wasteful number, since it uses less digits than its factorization.

2189834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6504.

The product of its digits is 13824, while the sum is 35.

The square root of 2189834 is about 1479.8087714296. The cubic root of 2189834 is about 129.8585048262.

The spelling of 2189834 in words is "two million, one hundred eighty-nine thousand, eight hundred thirty-four".