2889221 has 2 divisors, whose sum is σ = 2889222. Its totient is φ = 2889220.

The previous prime is 2889217. The next prime is 2889233. The reversal of 2889221 is 1229882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2512225 + 376996 = 1585^2 + 614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2889221 - 2² = 2889217 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2889251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1444610 + 1444611.

It is an arithmetic number, because the mean of its divisors is an integer number (1444611).

2^2889221 is an apocalyptic number.

It is an amenable number.

2889221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2889221 is an equidigital number, since it uses as much as digits as its factorization.

2889221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 32.

The square root of 2889221 is about 1699.7708669112. The cubic root of 2889221 is about 142.4274135299.

The spelling of 2889221 in words is "two million, eight hundred eighty-nine thousand, two hundred twenty-one".