2648389 has 4 divisors (see below), whose sum is σ = 2666080. Its totient is φ = 2630700.

The previous prime is 2648383. The next prime is 2648419. The reversal of 2648389 is 9838462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9838462 = 2 ⋅4919231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2648389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2648383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8619 + ... + 8920.

It is an arithmetic number, because the mean of its divisors is an integer number (666520).

2^2648389 is an apocalyptic number.

It is an amenable number.

2648389 is a deficient number, since it is larger than the sum of its proper divisors (17691).

2648389 is a wasteful number, since it uses less digits than its factorization.

2648389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17690.

The product of its digits is 82944, while the sum is 40.

The square root of 2648389 is about 1627.3871696680. The cubic root of 2648389 is about 138.3547025906.

The spelling of 2648389 in words is "two million, six hundred forty-eight thousand, three hundred eighty-nine".