2644849 has 2 divisors, whose sum is σ = 2644850. Its totient is φ = 2644848.

The previous prime is 2644847. The next prime is 2644853. The reversal of 2644849 is 9484462.

2644849 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., 2624400 + 20449 = 1620^2 + 143^2 .

It is a cyclic number.

It is not a de Polignac number, because 2644849 - 2¹ = 2644847 is a prime.

Together with 2644847, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 2¹³ + 6⁵ + 4² + 4² + 8⁷ + 4⁴ + 9⁶ .

It is equal to p₁₉₂₈₉₈ and since 2644849 and 192898 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2644847) 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, 1322424 + 1322425.

It is an arithmetic number, because the mean of its divisors is an integer number (1322425).

2^2644849 is an apocalyptic number.

It is an amenable number.

2644849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644849 is an equidigital number, since it uses as much as digits as its factorization.

2644849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 37.

The square root of 2644849 is about 1626.2991729691. The cubic root of 2644849 is about 138.2930306294.

The spelling of 2644849 in words is "two million, six hundred forty-four thousand, eight hundred forty-nine".