2918889 has 8 divisors (see below), whose sum is σ = 4324320. Its totient is φ = 1945908.

The previous prime is 2918887. The next prime is 2918891. The reversal of 2918889 is 9888192.

2918889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2918887) and next prime (2918891).

It is not a de Polignac number, because 2918889 - 2¹ = 2918887 is a prime.

2918889 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2918887) 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 7 ways as a sum of consecutive naturals, for example, 54027 + ... + 54080.

It is an arithmetic number, because the mean of its divisors is an integer number (540540).

2^2918889 is an apocalyptic number.

It is an amenable number.

2918889 is a deficient number, since it is larger than the sum of its proper divisors (1405431).

2918889 is a wasteful number, since it uses less digits than its factorization.

2918889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108116 (or 108110 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 2918889 is about 1708.4756363496. The cubic root of 2918889 is about 142.9132601911.

It can be divided in two parts, 291 and 8889, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 2918889 in words is "two million, nine hundred eighteen thousand, eight hundred eighty-nine".