4913221 has 8 divisors (see below), whose sum is σ = 5370624. Its totient is φ = 4474560.

The previous prime is 4913197. The next prime is 4913257. The reversal of 4913221 is 1223194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4913221 - 2⁵ = 4913189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4913192 and 4913201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4913261) 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, 4135 + ... + 5188.

It is an arithmetic number, because the mean of its divisors is an integer number (671328).

Almost surely, 2^4913221 is an apocalyptic number.

It is an amenable number.

4913221 is a deficient number, since it is larger than the sum of its proper divisors (457403).

4913221 is a wasteful number, since it uses less digits than its factorization.

4913221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9371.

The product of its digits is 432, while the sum is 22.

The square root of 4913221 is about 2216.5786699326. The cubic root of 4913221 is about 170.0025489814.

The spelling of 4913221 in words is "four million, nine hundred thirteen thousand, two hundred twenty-one".