3221984809 has 2 divisors, whose sum is σ = 3221984810. Its totient is φ = 3221984808.

The previous prime is 3221984683. The next prime is 3221984837. The reversal of 3221984809 is 9084891223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2309763600 + 912221209 = 48060^2 + 30203^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221984809 - 2³¹ = 1074501161 is a prime.

It is a super-2 number, since 2×3221984809² = 20762372218853532962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3221984849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610992404 + 1610992405.

It is an arithmetic number, because the mean of its divisors is an integer number (1610992405).

Almost surely, 2^3221984809 is an apocalyptic number.

It is an amenable number.

3221984809 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221984809 is an equidigital number, since it uses as much as digits as its factorization.

3221984809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 3221984809 is about 56762.5299735662. The cubic root of 3221984809 is about 1476.9795975140.

The spelling of 3221984809 in words is "three billion, two hundred twenty-one million, nine hundred eighty-four thousand, eight hundred nine".