2644429 has 2 divisors, whose sum is σ = 2644430. Its totient is φ = 2644428.

The previous prime is 2644409. The next prime is 2644451. The reversal of 2644429 is 9244462.

2644429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2319529 + 324900 = 1523^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2644429 - 2⁹ = 2643917 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6² + 4 + 4 + 4⁷ + 2²¹ + 9⁴ .

It is equal to p₁₉₂₈₇₄ and since 2644429 and 192874 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2644429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644409) 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 as a sum of consecutive naturals, namely, 1322214 + 1322215.

It is an arithmetic number, because the mean of its divisors is an integer number (1322215).

2^2644429 is an apocalyptic number.

It is an amenable number.

2644429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644429 is an equidigital number, since it uses as much as digits as its factorization.

2644429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 2644429 is about 1626.1700403094. The cubic root of 2644429 is about 138.2857099661.

The spelling of 2644429 in words is "two million, six hundred forty-four thousand, four hundred twenty-nine".