4446921 has 4 divisors (see below), whose sum is σ = 5929232. Its totient is φ = 2964612.

The previous prime is 4446899. The next prime is 4446971. The reversal of 4446921 is 1296444.

4446921 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4446921 - 2¹⁵ = 4414153 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4446971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741151 + ... + 741156.

It is an arithmetic number, because the mean of its divisors is an integer number (1482308).

Almost surely, 2^4446921 is an apocalyptic number.

It is an amenable number.

4446921 is a deficient number, since it is larger than the sum of its proper divisors (1482311).

4446921 is a wasteful number, since it uses less digits than its factorization.

4446921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482310.

The product of its digits is 6912, while the sum is 30.

The square root of 4446921 is about 2108.7723917009. The cubic root of 4446921 is about 164.4446711742. Note that the first 3 decimals are identical.

The spelling of 4446921 in words is "four million, four hundred forty-six thousand, nine hundred twenty-one".