2221849979 has 8 divisors (see below), whose sum is σ = 2324578560. Its totient is φ = 2119631976.

The previous prime is 2221849961. The next prime is 2221849999. The reversal of 2221849979 is 9799481222.

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

It is not a de Polignac number, because 2221849979 - 2⁸ = 2221849723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221849979.

It is not an unprimeable number, because it can be changed into a prime (2221849939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118727 + ... + 136160.

It is an arithmetic number, because the mean of its divisors is an integer number (290572320).

Almost surely, 2^2221849979 is an apocalyptic number.

2221849979 is a deficient number, since it is larger than the sum of its proper divisors (102728581).

2221849979 is a wasteful number, since it uses less digits than its factorization.

2221849979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255289.

The product of its digits is 1306368, while the sum is 53.

The square root of 2221849979 is about 47136.5036781474. The cubic root of 2221849979 is about 1304.8830121735.

The spelling of 2221849979 in words is "two billion, two hundred twenty-one million, eight hundred forty-nine thousand, nine hundred seventy-nine".