2198989 has 16 divisors (see below), whose sum is σ = 2499840. Its totient is φ = 1920960.

The previous prime is 2198981. The next prime is 2199061. The reversal of 2198989 is 9898912.

It is a happy number.

2198989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2198989 - 2³ = 2198981 is a prime.

It is a Duffinian number.

2198989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36019 + ... + 36079.

It is an arithmetic number, because the mean of its divisors is an integer number (156240).

2^2198989 is an apocalyptic number.

2198989 is the 793-rd nonagonal number.

It is an amenable number.

2198989 is a deficient number, since it is larger than the sum of its proper divisors (300851).

2198989 is a wasteful number, since it uses less digits than its factorization.

2198989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180.

The product of its digits is 93312, while the sum is 46.

The square root of 2198989 is about 1482.8988502255. The cubic root of 2198989 is about 130.0392189363.

The spelling of 2198989 in words is "two million, one hundred ninety-eight thousand, nine hundred eighty-nine".