2220947969 has 2 divisors, whose sum is σ = 2220947970. Its totient is φ = 2220947968.

The previous prime is 2220947951. The next prime is 2220947999. The reversal of 2220947969 is 9697490222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1765680400 + 455267569 = 42020^2 + 21337^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220947969 - 2¹² = 2220943873 is a prime.

It is a super-2 number, since 2×2220947969² = 9865219762010449922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2220947999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110473984 + 1110473985.

It is an arithmetic number, because the mean of its divisors is an integer number (1110473985).

Almost surely, 2^2220947969 is an apocalyptic number.

It is an amenable number.

2220947969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220947969 is an equidigital number, since it uses as much as digits as its factorization.

2220947969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 2220947969 is about 47126.9346446382. The cubic root of 2220947969 is about 1304.7064060642.

The spelling of 2220947969 in words is "two billion, two hundred twenty million, nine hundred forty-seven thousand, nine hundred sixty-nine".