4428709 has 2 divisors, whose sum is σ = 4428710. Its totient is φ = 4428708.

The previous prime is 4428703. The next prime is 4428713. The reversal of 4428709 is 9078244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2712609 + 1716100 = 1647^2 + 1310^2 .

It is a cyclic number.

It is not a de Polignac number, because 4428709 - 2³ = 4428701 is a prime.

It is a super-2 number, since 2×4428709² = 39226926813362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4428701) 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 as a sum of consecutive naturals, namely, 2214354 + 2214355.

It is an arithmetic number, because the mean of its divisors is an integer number (2214355).

Almost surely, 2^4428709 is an apocalyptic number.

It is an amenable number.

4428709 is a deficient number, since it is larger than the sum of its proper divisors (1).

4428709 is an equidigital number, since it uses as much as digits as its factorization.

4428709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 4428709 is about 2104.4498093326. The cubic root of 4428709 is about 164.2198741301.

The spelling of 4428709 in words is "four million, four hundred twenty-eight thousand, seven hundred nine".