2872889 has 2 divisors, whose sum is σ = 2872890. Its totient is φ = 2872888.

The previous prime is 2872853. The next prime is 2872897. The reversal of 2872889 is 9882782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1452025 + 1420864 = 1205^2 + 1192^2 .

It is a cyclic number.

It is not a de Polignac number, because 2872889 - 2¹² = 2868793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2872789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1436444 + 1436445.

It is an arithmetic number, because the mean of its divisors is an integer number (1436445).

2^2872889 is an apocalyptic number.

It is an amenable number.

2872889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2872889 is an equidigital number, since it uses as much as digits as its factorization.

2872889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 44.

The square root of 2872889 is about 1694.9598815311. The cubic root of 2872889 is about 142.1585381337.

The spelling of 2872889 in words is "two million, eight hundred seventy-two thousand, eight hundred eighty-nine".