4422421 has 8 divisors (see below), whose sum is σ = 4764320. Its totient is φ = 4091472.

The previous prime is 4422419. The next prime is 4422427. The reversal of 4422421 is 1242244.

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 4422421 - 2¹ = 4422419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4422427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1890 + ... + 3523.

It is an arithmetic number, because the mean of its divisors is an integer number (595540).

Almost surely, 2^4422421 is an apocalyptic number.

It is an amenable number.

4422421 is a deficient number, since it is larger than the sum of its proper divisors (341899).

4422421 is a wasteful number, since it uses less digits than its factorization.

4422421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5475.

The product of its digits is 512, while the sum is 19.

The square root of 4422421 is about 2102.9553014746. The cubic root of 4422421 is about 164.1421160547.

Adding to 4422421 its reverse (1242244), we get a palindrome (5664665).

The spelling of 4422421 in words is "four million, four hundred twenty-two thousand, four hundred twenty-one".