4220844 has 24 divisors (see below), whose sum is σ = 9901248. Its totient is φ = 1399440.

The previous prime is 4220819. The next prime is 4220851. The reversal of 4220844 is 4480224.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1699 + ... + 3365.

It is an arithmetic number, because the mean of its divisors is an integer number (412552).

Almost surely, 2^4220844 is an apocalyptic number.

It is an amenable number.

4220844 is an abundant number, since it is smaller than the sum of its proper divisors (5680404).

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

4220844 is a wasteful number, since it uses less digits than its factorization.

4220844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 4220844 is about 2054.4692745330. The cubic root of 4220844 is about 161.6093314711.

The spelling of 4220844 in words is "four million, two hundred twenty thousand, eight hundred forty-four".