2779983 has 6 divisors (see below), whose sum is σ = 4015544. Its totient is φ = 1853316.

The previous prime is 2779981. The next prime is 2779991. The reversal of 2779983 is 3899772.

It is not a de Polignac number, because 2779983 - 2¹ = 2779981 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 (2779981) 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 5 ways as a sum of consecutive naturals, for example, 154435 + ... + 154452.

2^2779983 is an apocalyptic number.

2779983 is a deficient number, since it is larger than the sum of its proper divisors (1235561).

2779983 is a wasteful number, since it uses less digits than its factorization.

2779983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308893 (or 308890 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 2779983 is about 1667.3281020843. The cubic root of 2779983 is about 140.6093001732.

The spelling of 2779983 in words is "two million, seven hundred seventy-nine thousand, nine hundred eighty-three".