2220979 has 2 divisors, whose sum is σ = 2220980. Its totient is φ = 2220978.

The previous prime is 2220973. The next prime is 2221007. The reversal of 2220979 is 9790222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2220979 - 2³ = 2220971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2220979.

It is not a weakly prime, because it can be changed into another prime (2220971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110489 + 1110490.

It is an arithmetic number, because the mean of its divisors is an integer number (1110490).

2^2220979 is an apocalyptic number.

2220979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220979 is an equidigital number, since it uses as much as digits as its factorization.

2220979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 2220979 is about 1490.2949372524. The cubic root of 2220979 is about 130.4712482472.

The spelling of 2220979 in words is "two million, two hundred twenty thousand, nine hundred seventy-nine".