4424921 has 2 divisors, whose sum is σ = 4424922. Its totient is φ = 4424920.

The previous prime is 4424887. The next prime is 4424923. The reversal of 4424921 is 1294244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2958400 + 1466521 = 1720^2 + 1211^2 .

It is a cyclic number.

It is not a de Polignac number, because 4424921 - 2⁶ = 4424857 is a prime.

Together with 4424923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4424923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2212460 + 2212461.

It is an arithmetic number, because the mean of its divisors is an integer number (2212461).

Almost surely, 2^4424921 is an apocalyptic number.

It is an amenable number.

4424921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4424921 is an equidigital number, since it uses as much as digits as its factorization.

4424921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 4424921 is about 2103.5496190963. The cubic root of 4424921 is about 164.1730401412.

The spelling of 4424921 in words is "four million, four hundred twenty-four thousand, nine hundred twenty-one".