2649109 has 2 divisors, whose sum is σ = 2649110. Its totient is φ = 2649108.

The previous prime is 2649091. The next prime is 2649137. The reversal of 2649109 is 9019462.

It is a happy number.

Together with previous prime (2649091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2630884 + 18225 = 1622^2 + 135^2 .

It is a cyclic number.

It is not a de Polignac number, because 2649109 - 2⁵ = 2649077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2649139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324554 + 1324555.

It is an arithmetic number, because the mean of its divisors is an integer number (1324555).

2^2649109 is an apocalyptic number.

It is an amenable number.

2649109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649109 is an equidigital number, since it uses as much as digits as its factorization.

2649109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2649109 is about 1627.6083681279. The cubic root of 2649109 is about 138.3672393139.

The spelling of 2649109 in words is "two million, six hundred forty-nine thousand, one hundred nine".