2779289289 has 12 divisors (see below), whose sum is σ = 4588033216. Its totient is φ = 1588165272.

The previous prime is 2779289267. The next prime is 2779289309. The reversal of 2779289289 is 9829829772.

2779289289 is a `hidden beast` number, since 2 + 7 + 79 + 289 + 289 = 666.

It is not a de Polignac number, because 2779289289 - 2¹² = 2779285193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 44115703 = 2779289289 / (2 + 7 + 7 + 9 + 2 + 8 + 9 + 2 + 8 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2779289089) 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, 22057789 + ... + 22057914.

Almost surely, 2^2779289289 is an apocalyptic number.

It is an amenable number.

2779289289 is a deficient number, since it is larger than the sum of its proper divisors (1808743927).

2779289289 is a wasteful number, since it uses less digits than its factorization.

2779289289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44115716 (or 44115713 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The square root of 2779289289 is about 52718.9651738347. The cubic root of 2779289289 is about 1405.9760341909.

The spelling of 2779289289 in words is "two billion, seven hundred seventy-nine million, two hundred eighty-nine thousand, two hundred eighty-nine".