2774666449 has 4 divisors (see below), whose sum is σ = 2775567780. Its totient is φ = 2773765120.

The previous prime is 2774666443. The next prime is 2774666459. The reversal of 2774666449 is 9446664772.

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 2573735824 + 200930625 = 50732^2 + 14175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2774666449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2774666449.

It is not an unprimeable number, because it can be changed into a prime (2774666443) 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 3 ways as a sum of consecutive naturals, for example, 446032 + ... + 452209.

It is an arithmetic number, because the mean of its divisors is an integer number (693891945).

Almost surely, 2^2774666449 is an apocalyptic number.

It is an amenable number.

2774666449 is a deficient number, since it is larger than the sum of its proper divisors (901331).

2774666449 is an equidigital number, since it uses as much as digits as its factorization.

2774666449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901330.

The product of its digits is 12192768, while the sum is 55.

The square root of 2774666449 is about 52675.1027431366. The cubic root of 2774666449 is about 1405.1960734958.

The spelling of 2774666449 in words is "two billion, seven hundred seventy-four million, six hundred sixty-six thousand, four hundred forty-nine".