2398189 has 2 divisors, whose sum is σ = 2398190. Its totient is φ = 2398188.

The previous prime is 2398183. The next prime is 2398211. The reversal of 2398189 is 9818932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1542564 + 855625 = 1242^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 2398189 - 2³ = 2398181 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2398181) 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 as a sum of consecutive naturals, namely, 1199094 + 1199095.

It is an arithmetic number, because the mean of its divisors is an integer number (1199095).

2^2398189 is an apocalyptic number.

It is an amenable number.

2398189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2398189 is an equidigital number, since it uses as much as digits as its factorization.

2398189 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2398189 is about 1548.6087304416. The cubic root of 2398189 is about 133.8529053459.

The spelling of 2398189 in words is "two million, three hundred ninety-eight thousand, one hundred eighty-nine".