2279779 has 4 divisors (see below), whose sum is σ = 2285640. Its totient is φ = 2273920.

The previous prime is 2279773. The next prime is 2279807. The reversal of 2279779 is 9779722.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2279779 - 2¹¹ = 2277731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2279773) 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, 2302 + ... + 3139.

It is an arithmetic number, because the mean of its divisors is an integer number (571410).

2^2279779 is an apocalyptic number.

2279779 is a deficient number, since it is larger than the sum of its proper divisors (5861).

2279779 is an equidigital number, since it uses as much as digits as its factorization.

2279779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5860.

The product of its digits is 111132, while the sum is 43.

The square root of 2279779 is about 1509.8937048680. The cubic root of 2279779 is about 131.6126346335.

The spelling of 2279779 in words is "two million, two hundred seventy-nine thousand, seven hundred seventy-nine".