4221803 has 4 divisors (see below), whose sum is σ = 4230960. Its totient is φ = 4212648.

The previous prime is 4221799. The next prime is 4221827. The reversal of 4221803 is 3081224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4221803 - 2² = 4221799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4221883) 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 3 ways as a sum of consecutive naturals, for example, 3848 + ... + 4821.

It is an arithmetic number, because the mean of its divisors is an integer number (1057740).

Almost surely, 2^4221803 is an apocalyptic number.

4221803 is a deficient number, since it is larger than the sum of its proper divisors (9157).

4221803 is an equidigital number, since it uses as much as digits as its factorization.

4221803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9156.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4221803 is about 2054.7026548871. The cubic root of 4221803 is about 161.6215700670.

The spelling of 4221803 in words is "four million, two hundred twenty-one thousand, eight hundred three".