2439889 has 2 divisors, whose sum is σ = 2439890. Its totient is φ = 2439888.

The previous prime is 2439881. The next prime is 2439893. The reversal of 2439889 is 9889342.

It is a happy number.

2439889 is nontrivially palindromic in base 11.

2439889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1399489 + 1040400 = 1183^2 + 1020^2 .

It is a cyclic number.

It is not a de Polignac number, because 2439889 - 2³ = 2439881 is a prime.

It is a d-powerful number, because it can be written as 2¹⁸ + 4 + 3¹³ + 9² + 8⁶ + 8⁶ + 9⁵ .

It is not a weakly prime, because it can be changed into another prime (2439881) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1219944 + 1219945.

It is an arithmetic number, because the mean of its divisors is an integer number (1219945).

2^2439889 is an apocalyptic number.

It is an amenable number.

2439889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2439889 is an equidigital number, since it uses as much as digits as its factorization.

2439889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 2439889 is about 1562.0144045431. The cubic root of 2439889 is about 134.6242684498.

The spelling of 2439889 in words is "two million, four hundred thirty-nine thousand, eight hundred eighty-nine".