4420309 has 2 divisors, whose sum is σ = 4420310. Its totient is φ = 4420308.

The previous prime is 4420249. The next prime is 4420319. The reversal of 4420309 is 9030244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2722500 + 1697809 = 1650^2 + 1303^2 .

It is a cyclic number.

It is not a de Polignac number, because 4420309 - 2⁹ = 4419797 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4420309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4420319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210154 + 2210155.

It is an arithmetic number, because the mean of its divisors is an integer number (2210155).

Almost surely, 2^4420309 is an apocalyptic number.

It is an amenable number.

4420309 is a deficient number, since it is larger than the sum of its proper divisors (1).

4420309 is an equidigital number, since it uses as much as digits as its factorization.

4420309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 4420309 is about 2102.4530910344. The cubic root of 4420309 is about 164.1159823035.

The spelling of 4420309 in words is "four million, four hundred twenty thousand, three hundred nine".