2889999 has 24 divisors (see below), whose sum is σ = 4950400. Its totient is φ = 1650456.

The previous prime is 2889979. The next prime is 2890001. The reversal of 2889999 is 9999882.

It is a Cunningham number, because it is equal to 1700²-1.

It is not a de Polignac number, because 2889999 - 2¹⁶ = 2824463 is a prime.

2889999 is a modest number, since divided by 9999 gives 288 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2889979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 852 + ... + 2550.

2^2889999 is an apocalyptic number.

2889999 is a deficient number, since it is larger than the sum of its proper divisors (2060401).

2889999 is an equidigital number, since it uses as much as digits as its factorization.

2889999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721 (or 1709 counting only the distinct ones).

The product of its digits is 839808, while the sum is 54.

The square root of 2889999 is about 1699.9997058823. Note that the first 3 decimals coincide. The cubic root of 2889999 is about 142.4401965122.

The spelling of 2889999 in words is "two million, eight hundred eighty-nine thousand, nine hundred ninety-nine".