4032409 has 2 divisors, whose sum is σ = 4032410. Its totient is φ = 4032408.

The previous prime is 4032407. The next prime is 4032433. The reversal of 4032409 is 9042304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2975625 + 1056784 = 1725^2 + 1028^2 .

It is a cyclic number.

It is not a de Polignac number, because 4032409 - 2¹ = 4032407 is a prime.

Together with 4032407, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4032409.

It is not a weakly prime, because it can be changed into another prime (4032401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2016204 + 2016205.

It is an arithmetic number, because the mean of its divisors is an integer number (2016205).

Almost surely, 2^4032409 is an apocalyptic number.

It is an amenable number.

4032409 is a deficient number, since it is larger than the sum of its proper divisors (1).

4032409 is an equidigital number, since it uses as much as digits as its factorization.

4032409 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4032409 is about 2008.0859045370. The cubic root of 4032409 is about 159.1676698614.

The spelling of 4032409 in words is "four million, thirty-two thousand, four hundred nine".