2773989 has 12 divisors (see below), whose sum is σ = 4030156. Its totient is φ = 1838592.

The previous prime is 2773949. The next prime is 2773997. The reversal of 2773989 is 9893772.

It can be written as a sum of positive squares in 2 ways, for example, as 613089 + 2160900 = 783^2 + 1470^2 .

It is not a de Polignac number, because 2773989 - 2¹³ = 2765797 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 (2773919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 939 + ... + 2535.

2^2773989 is an apocalyptic number.

It is an amenable number.

2773989 is a deficient number, since it is larger than the sum of its proper divisors (1256167).

2773989 is a wasteful number, since it uses less digits than its factorization.

2773989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796 (or 1793 counting only the distinct ones).

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

The square root of 2773989 is about 1665.5296454882. The cubic root of 2773989 is about 140.5081702252.

The spelling of 2773989 in words is "two million, seven hundred seventy-three thousand, nine hundred eighty-nine".