32403409 has 2 divisors, whose sum is σ = 32403410. Its totient is φ = 32403408.

The previous prime is 32403403. The next prime is 32403421. The reversal of 32403409 is 90430423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18318400 + 14085009 = 4280^2 + 3753^2 .

It is an emirp because it is prime and its reverse (90430423) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32403409 - 2⁹ = 32402897 is a prime.

It is not a weakly prime, because it can be changed into another prime (32403403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16201704 + 16201705.

It is an arithmetic number, because the mean of its divisors is an integer number (16201705).

Almost surely, 2^32403409 is an apocalyptic number.

It is an amenable number.

32403409 is a deficient number, since it is larger than the sum of its proper divisors (1).

32403409 is an equidigital number, since it uses as much as digits as its factorization.

32403409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 32403409 is about 5692.3992305530. The cubic root of 32403409 is about 318.8087512363.

The spelling of 32403409 in words is "thirty-two million, four hundred three thousand, four hundred nine".