4421919 has 4 divisors (see below), whose sum is σ = 5895896. Its totient is φ = 2947944.

The previous prime is 4421909. The next prime is 4421929. The reversal of 4421919 is 9191244.

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

It is an interprime number because it is at equal distance from previous prime (4421909) and next prime (4421929).

It is not a de Polignac number, because 4421919 - 2⁴ = 4421903 is a prime.

It is a super-2 number, since 2×4421919² = 39106735285122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

4421919 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736984 + ... + 736989.

It is an arithmetic number, because the mean of its divisors is an integer number (1473974).

Almost surely, 2^4421919 is an apocalyptic number.

4421919 is a deficient number, since it is larger than the sum of its proper divisors (1473977).

4421919 is a wasteful number, since it uses less digits than its factorization.

4421919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473976.

The product of its digits is 2592, while the sum is 30.

The square root of 4421919 is about 2102.8359422456. The cubic root of 4421919 is about 164.1359050931.

The spelling of 4421919 in words is "four million, four hundred twenty-one thousand, nine hundred nineteen".