4229809 has 2 divisors, whose sum is σ = 4229810. Its totient is φ = 4229808.

The previous prime is 4229783. The next prime is 4229833. The reversal of 4229809 is 9089224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3621409 + 608400 = 1903^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 4229809 - 2¹¹ = 4227761 is a prime.

4229809 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4220809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2114904 + 2114905.

It is an arithmetic number, because the mean of its divisors is an integer number (2114905).

Almost surely, 2^4229809 is an apocalyptic number.

It is an amenable number.

4229809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4229809 is an equidigital number, since it uses as much as digits as its factorization.

4229809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 4229809 is about 2056.6499459072. The cubic root of 4229809 is about 161.7236690383.

The spelling of 4229809 in words is "four million, two hundred twenty-nine thousand, eight hundred nine".