2222779 has 8 divisors (see below), whose sum is σ = 2433872. Its totient is φ = 2017440.

The previous prime is 2222761. The next prime is 2222783. The reversal of 2222779 is 9772222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2222779 - 2¹¹ = 2220731 is a prime.

It is a d-powerful number, because it can be written as 2² + 2¹⁰ + 2¹⁶ + 2²¹ + 7 + 7 + 9⁵ .

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2222779.

It is not an unprimeable number, because it can be changed into a prime (2222719) 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 7 ways as a sum of consecutive naturals, for example, 609 + ... + 2194.

It is an arithmetic number, because the mean of its divisors is an integer number (304234).

2^2222779 is an apocalyptic number.

2222779 is a deficient number, since it is larger than the sum of its proper divisors (211093).

2222779 is a wasteful number, since it uses less digits than its factorization.

2222779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877.

The product of its digits is 7056, while the sum is 31.

The square root of 2222779 is about 1490.8987222478. The cubic root of 2222779 is about 130.5064856854.

It can be divided in two parts, 22 and 22779, that added together give a square (22801 = 151²).

The spelling of 2222779 in words is "two million, two hundred twenty-two thousand, seven hundred seventy-nine".