4644483221 has 4 divisors (see below), whose sum is σ = 5307980832. Its totient is φ = 3980985612.

The previous prime is 4644483199. The next prime is 4644483269. The reversal of 4644483221 is 1223844464.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4644483221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4644483421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331748795 + ... + 331748808.

It is an arithmetic number, because the mean of its divisors is an integer number (1326995208).

Almost surely, 2^4644483221 is an apocalyptic number.

It is an amenable number.

4644483221 is a deficient number, since it is larger than the sum of its proper divisors (663497611).

4644483221 is an equidigital number, since it uses as much as digits as its factorization.

4644483221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663497610.

The product of its digits is 147456, while the sum is 38.

The square root of 4644483221 is about 68150.4454937750. The cubic root of 4644483221 is about 1668.4471947855.

The spelling of 4644483221 in words is "four billion, six hundred forty-four million, four hundred eighty-three thousand, two hundred twenty-one".