2009889 has 24 divisors (see below), whose sum is σ = 3378752. Its totient is φ = 1127520.

The previous prime is 2009881. The next prime is 2009897. The reversal of 2009889 is 9889002.

It is an interprime number because it is at equal distance from previous prime (2009881) and next prime (2009897).

It is not a de Polignac number, because 2009889 - 2³ = 2009881 is a prime.

It is a Duffinian number.

2009889 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2009881) 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 23 ways as a sum of consecutive naturals, for example, 3582 + ... + 4104.

2^2009889 is an apocalyptic number.

It is an amenable number.

2009889 is a deficient number, since it is larger than the sum of its proper divisors (1368863).

2009889 is a wasteful number, since it uses less digits than its factorization.

2009889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 2009889 is about 1417.7055406536. The cubic root of 2009889 is about 126.1994196626.

The spelling of 2009889 in words is "two million, nine thousand, eight hundred eighty-nine".