2806989 has 16 divisors (see below), whose sum is σ = 4136832. Its totient is φ = 1683968.

The previous prime is 2806987. The next prime is 2807009. The reversal of 2806989 is 9896082.

It is not a de Polignac number, because 2806989 - 2¹ = 2806987 is a prime.

It is a super-2 number, since 2×2806989² = 15758374492242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2806989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2806987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24 + ... + 2369.

It is an arithmetic number, because the mean of its divisors is an integer number (258552).

2^2806989 is an apocalyptic number.

It is an amenable number.

2806989 is a deficient number, since it is larger than the sum of its proper divisors (1329843).

2806989 is a wasteful number, since it uses less digits than its factorization.

2806989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 2806989 is about 1675.4071147038. The cubic root of 2806989 is about 141.0631476114.

The spelling of 2806989 in words is "two million, eight hundred six thousand, nine hundred eighty-nine".