4396409 has 2 divisors, whose sum is σ = 4396410. Its totient is φ = 4396408.

The previous prime is 4396397. The next prime is 4396411. The reversal of 4396409 is 9046934.

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., 4012009 + 384400 = 2003^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 4396409 - 2⁴ = 4396393 is a prime.

Together with 4396411, 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 (4396439) 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, 2198204 + 2198205.

It is an arithmetic number, because the mean of its divisors is an integer number (2198205).

Almost surely, 2^4396409 is an apocalyptic number.

It is an amenable number.

4396409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4396409 is an equidigital number, since it uses as much as digits as its factorization.

4396409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 4396409 is about 2096.7615505822. The cubic root of 4396409 is about 163.8196634617.

The spelling of 4396409 in words is "four million, three hundred ninety-six thousand, four hundred nine".