2197984889 has 8 divisors (see below), whose sum is σ = 2299984200. Its totient is φ = 2098227456.

The previous prime is 2197984883. The next prime is 2197984897. The reversal of 2197984889 is 9884897912.

It can be written as a sum of positive squares in 4 ways, for example, as 1692499600 + 505485289 = 41140^2 + 22483^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2197984889 - 2¹² = 2197980793 is a prime.

It is a super-2 number, since 2×2197984889² = 9662275144544684642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2197984883) 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, 558464 + ... + 562385.

It is an arithmetic number, because the mean of its divisors is an integer number (287498025).

Almost surely, 2^2197984889 is an apocalyptic number.

It is an amenable number.

2197984889 is a deficient number, since it is larger than the sum of its proper divisors (101999311).

2197984889 is a wasteful number, since it uses less digits than its factorization.

2197984889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120939.

The product of its digits is 20901888, while the sum is 65.

The square root of 2197984889 is about 46882.6715215761. The cubic root of 2197984889 is about 1300.1942291648.

The spelling of 2197984889 in words is "two billion, one hundred ninety-seven million, nine hundred eighty-four thousand, eight hundred eighty-nine".