2722989 has 4 divisors (see below), whose sum is σ = 3630656. Its totient is φ = 1815324.

The previous prime is 2722987. The next prime is 2722999. The reversal of 2722989 is 9892272.

2722989 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 not a de Polignac number, because 2722989 - 2¹ = 2722987 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2722987) 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, 453829 + ... + 453834.

It is an arithmetic number, because the mean of its divisors is an integer number (907664).

2^2722989 is an apocalyptic number.

It is an amenable number.

2722989 is a deficient number, since it is larger than the sum of its proper divisors (907667).

2722989 is an equidigital number, since it uses as much as digits as its factorization.

2722989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907666.

The product of its digits is 36288, while the sum is 39.

The square root of 2722989 is about 1650.1481751649. The cubic root of 2722989 is about 139.6417541350.

The spelling of 2722989 in words is "two million, seven hundred twenty-two thousand, nine hundred eighty-nine".