2649389 has 4 divisors (see below), whose sum is σ = 2685756. Its totient is φ = 2613024.

The previous prime is 2649371. The next prime is 2649391. The reversal of 2649389 is 9839462.

It is a happy number.

2649389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 570025 + 2079364 = 755^2 + 1442^2 .

It is a cyclic number.

It is not a de Polignac number, because 2649389 - 2²⁰ = 1600813 is a prime.

It is a d-powerful number, because it can be written as 2 + 6 + 4⁵ + 9² + 3⁹ + 8⁷ + 9⁶ .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649319) 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 in 3 ways as a sum of consecutive naturals, for example, 18074 + ... + 18219.

It is an arithmetic number, because the mean of its divisors is an integer number (671439).

2^2649389 is an apocalyptic number.

It is an amenable number.

2649389 is a deficient number, since it is larger than the sum of its proper divisors (36367).

2649389 is an equidigital number, since it uses as much as digits as its factorization.

2649389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36366.

The product of its digits is 93312, while the sum is 41.

The square root of 2649389 is about 1627.6943816331. The cubic root of 2649389 is about 138.3721140928.

The spelling of 2649389 in words is "two million, six hundred forty-nine thousand, three hundred eighty-nine".