2159889 has 8 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 1428336.

The previous prime is 2159887. The next prime is 2159893. The reversal of 2159889 is 9889512.

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 2159889 - 2¹ = 2159887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2159889.

It is not an unprimeable number, because it can be changed into a prime (2159881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2454 + ... + 3215.

It is an arithmetic number, because the mean of its divisors is an integer number (362880).

2^2159889 is an apocalyptic number.

It is an amenable number.

2159889 is a deficient number, since it is larger than the sum of its proper divisors (743151).

2159889 is a wasteful number, since it uses less digits than its factorization.

2159889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5799.

The product of its digits is 51840, while the sum is 42.

The square root of 2159889 is about 1469.6560822179. The cubic root of 2159889 is about 129.2638670839.

The spelling of 2159889 in words is "two million, one hundred fifty-nine thousand, eight hundred eighty-nine".