3444664221 has 24 divisors (see below), whose sum is σ = 5126583800. Its totient is φ = 2227170816.

The previous prime is 3444664211. The next prime is 3444664243. The reversal of 3444664221 is 1224664443.

3444664221 is a `hidden beast` number, since 3 + 4 + 4 + 4 + 6 + 642 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 32936121 + 3411728100 = 5739^2 + 58410^2 .

It is not a de Polignac number, because 3444664221 - 2¹¹ = 3444662173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3444664211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87705 + ... + 120753.

Almost surely, 2^3444664221 is an apocalyptic number.

It is an amenable number.

3444664221 is a deficient number, since it is larger than the sum of its proper divisors (1681919579).

3444664221 is a wasteful number, since it uses less digits than its factorization.

3444664221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33405 (or 33402 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 3444664221 is about 58691.2618794314. The cubic root of 3444664221 is about 1510.2504183897.

The spelling of 3444664221 in words is "three billion, four hundred forty-four million, six hundred sixty-four thousand, two hundred twenty-one".