4416921 has 6 divisors (see below), whose sum is σ = 6380010. Its totient is φ = 2944608.

The previous prime is 4416913. The next prime is 4416931. The reversal of 4416921 is 1296144.

It can be written as a sum of positive squares in only one way, i.e., 4347225 + 69696 = 2085^2 + 264^2 .

It is not a de Polignac number, because 4416921 - 2³ = 4416913 is a prime.

It is a super-2 number, since 2×4416921² = 39018382240482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4416931) 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 5 ways as a sum of consecutive naturals, for example, 245376 + ... + 245393.

It is an arithmetic number, because the mean of its divisors is an integer number (1063335).

Almost surely, 2^4416921 is an apocalyptic number.

It is an amenable number.

4416921 is a deficient number, since it is larger than the sum of its proper divisors (1963089).

4416921 is a wasteful number, since it uses less digits than its factorization.

4416921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490775 (or 490772 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 4416921 is about 2101.6472111180. The cubic root of 4416921 is about 164.0740420179.

The spelling of 4416921 in words is "four million, four hundred sixteen thousand, nine hundred twenty-one".