3221788444 has 24 divisors (see below), whose sum is σ = 6549212768. Its totient is φ = 1358130240.

The previous prime is 3221788441. The next prime is 3221788463. The reversal of 3221788444 is 4448871223.

It is a super-2 number, since 2×3221788444² = 20759841555783882272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3221788444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221788441) 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 in 7 ways as a sum of consecutive naturals, for example, 941439 + ... + 944854.

Almost surely, 2^3221788444 is an apocalyptic number.

It is an amenable number.

3221788444 is an abundant number, since it is smaller than the sum of its proper divisors (3327424324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221788444 is a wasteful number, since it uses less digits than its factorization.

3221788444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886365 (or 1886363 counting only the distinct ones).

The product of its digits is 344064, while the sum is 43.

The square root of 3221788444 is about 56760.8002410114. The cubic root of 3221788444 is about 1476.9495918904.

The spelling of 3221788444 in words is "three billion, two hundred twenty-one million, seven hundred eighty-eight thousand, four hundred forty-four".