2189994 has 16 divisors (see below), whose sum is σ = 4396032. Its totient is φ = 727328.

The previous prime is 2189989. The next prime is 2190017. The reversal of 2189994 is 4999812.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1822 + ... + 2774.

It is an arithmetic number, because the mean of its divisors is an integer number (274752).

2^2189994 is an apocalyptic number.

2189994 is an abundant number, since it is smaller than the sum of its proper divisors (2206038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2189994 is a wasteful number, since it uses less digits than its factorization.

2189994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341.

The product of its digits is 46656, while the sum is 42.

The square root of 2189994 is about 1479.8628314814. The cubic root of 2189994 is about 129.8616674487.

The spelling of 2189994 in words is "two million, one hundred eighty-nine thousand, nine hundred ninety-four".