2017889 has 2 divisors, whose sum is σ = 2017890. Its totient is φ = 2017888.

The previous prime is 2017843. The next prime is 2017901. The reversal of 2017889 is 9887102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2007889 + 10000 = 1417^2 + 100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2017889 is a prime.

It is not a weakly prime, because it can be changed into another prime (2017189) 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 as a sum of consecutive naturals, namely, 1008944 + 1008945.

It is an arithmetic number, because the mean of its divisors is an integer number (1008945).

2^2017889 is an apocalyptic number.

It is an amenable number.

2017889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2017889 is an equidigital number, since it uses as much as digits as its factorization.

2017889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 2017889 is about 1420.5241990195. The cubic root of 2017889 is about 126.3666359960.

The spelling of 2017889 in words is "two million, seventeen thousand, eight hundred eighty-nine".