2649239 has 4 divisors (see below), whose sum is σ = 2665656. Its totient is φ = 2632824.

The previous prime is 2649233. The next prime is 2649281. The reversal of 2649239 is 9329462.

2649239 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 is a cyclic number.

It is not a de Polignac number, because 2649239 - 2¹⁶ = 2583703 is a prime.

It is a d-powerful number, because it can be written as 2 + 6³ + 4² + 9³ + 2²¹ + 3⁹ + 9⁶ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2649199 and 2649208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649233) 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, 7964 + ... + 8289.

It is an arithmetic number, because the mean of its divisors is an integer number (666414).

2^2649239 is an apocalyptic number.

2649239 is a deficient number, since it is larger than the sum of its proper divisors (16417).

2649239 is a wasteful number, since it uses less digits than its factorization.

2649239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16416.

The product of its digits is 23328, while the sum is 35.

The square root of 2649239 is about 1627.6483035349. The cubic root of 2649239 is about 138.3695026468.

The spelling of 2649239 in words is "two million, six hundred forty-nine thousand, two hundred thirty-nine".