352409 has 2 divisors, whose sum is σ = 352410. Its totient is φ = 352408.

The previous prime is 352403. The next prime is 352411. The reversal of 352409 is 904253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313600 + 38809 = 560^2 + 197^2 .

It is a cyclic number.

It is not a de Polignac number, because 352409 - 2¹⁶ = 286873 is a prime.

It is a Sophie Germain prime.

Together with 352411, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (352403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176204 + 176205.

It is an arithmetic number, because the mean of its divisors is an integer number (176205).

2³⁵²⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

352409 is a deficient number, since it is larger than the sum of its proper divisors (1).

352409 is an equidigital number, since it uses as much as digits as its factorization.

352409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 352409 is about 593.6404635804. The cubic root of 352409 is about 70.6343029487.

The spelling of 352409 in words is "three hundred fifty-two thousand, four hundred nine".