2489321 has 2 divisors, whose sum is σ = 2489322. Its totient is φ = 2489320.

The previous prime is 2489309. The next prime is 2489339. The reversal of 2489321 is 1239842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357225 + 1132096 = 1165^2 + 1064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2489321 is a prime.

It is not a weakly prime, because it can be changed into another prime (2489341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1244660 + 1244661.

It is an arithmetic number, because the mean of its divisors is an integer number (1244661).

2^2489321 is an apocalyptic number.

It is an amenable number.

2489321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2489321 is an equidigital number, since it uses as much as digits as its factorization.

2489321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 2489321 is about 1577.7582197536. The cubic root of 2489321 is about 135.5273565767.

It can be divided in two parts, 24893 and 21, that multiplied together give a triangular number (522753 = T₁₀₂₂).

The spelling of 2489321 in words is "two million, four hundred eighty-nine thousand, three hundred twenty-one".