2644039 has 2 divisors, whose sum is σ = 2644040. Its totient is φ = 2644038.

The previous prime is 2644007. The next prime is 2644043. The reversal of 2644039 is 9304462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2644039 - 2⁵ = 2644007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2643998 and 2644016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322019 + 1322020.

It is an arithmetic number, because the mean of its divisors is an integer number (1322020).

2^2644039 is an apocalyptic number.

2644039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644039 is an equidigital number, since it uses as much as digits as its factorization.

2644039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 2644039 is about 1626.0501222287. The cubic root of 2644039 is about 138.2789115131.

The spelling of 2644039 in words is "two million, six hundred forty-four thousand, thirty-nine".