4244721 has 16 divisors (see below), whose sum is σ = 6150144. Its totient is φ = 2588544.

The previous prime is 4244707. The next prime is 4244729. The reversal of 4244721 is 1274424.

It is not a de Polignac number, because 4244721 - 2²¹ = 2147569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4244691 and 4244700.

It is not an unprimeable number, because it can be changed into a prime (4244729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4525 + ... + 5381.

It is an arithmetic number, because the mean of its divisors is an integer number (384384).

Almost surely, 2^4244721 is an apocalyptic number.

It is an amenable number.

4244721 is a deficient number, since it is larger than the sum of its proper divisors (1905423).

4244721 is a wasteful number, since it uses less digits than its factorization.

4244721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000.

The product of its digits is 1792, while the sum is 24.

The square root of 4244721 is about 2060.2720694122. The cubic root of 4244721 is about 161.9134959601.

The spelling of 4244721 in words is "four million, two hundred forty-four thousand, seven hundred twenty-one".