2028989 has 4 divisors (see below), whose sum is σ = 2049180. Its totient is φ = 2008800.

The previous prime is 2028973. The next prime is 2029003. The reversal of 2028989 is 9898202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1188100 + 840889 = 1090^2 + 917^2 .

It is a cyclic number.

It is not a de Polignac number, because 2028989 - 2⁴ = 2028973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9944 + ... + 10145.

It is an arithmetic number, because the mean of its divisors is an integer number (512295).

2^2028989 is an apocalyptic number.

It is an amenable number.

2028989 is a deficient number, since it is larger than the sum of its proper divisors (20191).

2028989 is a wasteful number, since it uses less digits than its factorization.

2028989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20190.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 2028989 is about 1424.4258492459. The cubic root of 2028989 is about 126.5979182182.

The spelling of 2028989 in words is "two million, twenty-eight thousand, nine hundred eighty-nine".