2889649 has 4 divisors (see below), whose sum is σ = 3302464. Its totient is φ = 2476836.

The previous prime is 2889641. The next prime is 2889683. The reversal of 2889649 is 9469882.

2889649 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2889649 - 2³ = 2889641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2889599 and 2889608.

It is not an unprimeable number, because it can be changed into a prime (2889641) 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, 206397 + ... + 206410.

It is an arithmetic number, because the mean of its divisors is an integer number (825616).

2^2889649 is an apocalyptic number.

It is an amenable number.

2889649 is a deficient number, since it is larger than the sum of its proper divisors (412815).

2889649 is an equidigital number, since it uses as much as digits as its factorization.

2889649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412814.

The product of its digits is 248832, while the sum is 46.

The square root of 2889649 is about 1699.8967615711. The cubic root of 2889649 is about 142.4344460971.

The spelling of 2889649 in words is "two million, eight hundred eighty-nine thousand, six hundred forty-nine".