2779415489 has 4 divisors (see below), whose sum is σ = 2781125424. Its totient is φ = 2777705556.

The previous prime is 2779415479. The next prime is 2779415501. The reversal of 2779415489 is 9845149772.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2779415489 - 2²⁴ = 2762638273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2779415449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852527 + ... + 855780.

It is an arithmetic number, because the mean of its divisors is an integer number (695281356).

Almost surely, 2^2779415489 is an apocalyptic number.

It is an amenable number.

2779415489 is a deficient number, since it is larger than the sum of its proper divisors (1709935).

2779415489 is a wasteful number, since it uses less digits than its factorization.

2779415489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709934.

The product of its digits is 5080320, while the sum is 56.

The square root of 2779415489 is about 52720.1620729679. The cubic root of 2779415489 is about 1405.9973143902.

The spelling of 2779415489 in words is "two billion, seven hundred seventy-nine million, four hundred fifteen thousand, four hundred eighty-nine".