2198389 has 8 divisors (see below), whose sum is σ = 2355480. Its totient is φ = 2044416.

The previous prime is 2198377. The next prime is 2198401. The reversal of 2198389 is 9838912.

2198389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2198377) and next prime (2198401).

It can be written as a sum of positive squares in 4 ways, for example, as 887364 + 1311025 = 942^2 + 1145^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2198389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198309) 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 7 ways as a sum of consecutive naturals, for example, 787 + ... + 2239.

It is an arithmetic number, because the mean of its divisors is an integer number (294435).

2^2198389 is an apocalyptic number.

It is an amenable number.

2198389 is a deficient number, since it is larger than the sum of its proper divisors (157091).

2198389 is a wasteful number, since it uses less digits than its factorization.

2198389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559.

The product of its digits is 31104, while the sum is 40.

The square root of 2198389 is about 1482.6965299750. The cubic root of 2198389 is about 130.0273906782.

The spelling of 2198389 in words is "two million, one hundred ninety-eight thousand, three hundred eighty-nine".