3221475912 has 36 divisors (see below), whose sum is σ = 8726135145. Its totient is φ = 1073664768.

The previous prime is 3221475883. The next prime is 3221475913. The reversal of 3221475912 is 2195741223.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

3221475912 is a `hidden beast` number, since 3 + 2 + 21 + 47 + 591 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2807516196 + 413959716 = 52986^2 + 20346^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=40134.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3221475913) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 478264 + ... + 484952.

Almost surely, 2^3221475912 is an apocalyptic number.

It is an amenable number.

3221475912 is an abundant number, since it is smaller than the sum of its proper divisors (5504659233).

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

3221475912 is an frugal number, since it uses more digits than its factorization.

3221475912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13390 (or 6694 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 3221475912 is about 56758.0471122818. The cubic root of 3221475912 is about 1476.9018328124.

The spelling of 3221475912 in words is "three billion, two hundred twenty-one million, four hundred seventy-five thousand, nine hundred twelve".