3221400444 has 12 divisors (see below), whose sum is σ = 7516601064. Its totient is φ = 1073800144.

The previous prime is 3221400443. The next prime is 3221400451. The reversal of 3221400444 is 4440041223.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221400443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134225007 + ... + 134225030.

It is an arithmetic number, because the mean of its divisors is an integer number (626383422).

Almost surely, 2^3221400444 is an apocalyptic number.

It is an amenable number.

3221400444 is an abundant number, since it is smaller than the sum of its proper divisors (4295200620).

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

3221400444 is a wasteful number, since it uses less digits than its factorization.

3221400444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268450044 (or 268450042 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 3221400444 is about 56757.3822863599. The cubic root of 3221400444 is about 1476.8902998276.

Adding to 3221400444 its reverse (4440041223), we get a palindrome (7661441667).

The spelling of 3221400444 in words is "three billion, two hundred twenty-one million, four hundred thousand, four hundred forty-four".