2809983 has 12 divisors (see below), whose sum is σ = 4118744. Its totient is φ = 1702800.

The previous prime is 2809973. The next prime is 2809987. The reversal of 2809983 is 3899082.

It is not a de Polignac number, because 2809983 - 2⁸ = 2809727 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 (2809987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3508 + ... + 4233.

2^2809983 is an apocalyptic number.

2809983 is a deficient number, since it is larger than the sum of its proper divisors (1308761).

2809983 is a wasteful number, since it uses less digits than its factorization.

2809983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7766 (or 7755 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 2809983 is about 1676.3003907415. The cubic root of 2809983 is about 141.1132835390.

It can be divided in two parts, 28099 and 83, that added together give a palindrome (28182).

The spelling of 2809983 in words is "two million, eight hundred nine thousand, nine hundred eighty-three".