352438409 has 2 divisors, whose sum is σ = 352438410. Its totient is φ = 352438408.

The previous prime is 352438351. The next prime is 352438417. The reversal of 352438409 is 904834253.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328153225 + 24285184 = 18115^2 + 4928^2 .

It is a cyclic number.

It is not a de Polignac number, because 352438409 - 2¹⁶ = 352372873 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (352438459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176219204 + 176219205.

It is an arithmetic number, because the mean of its divisors is an integer number (176219205).

Almost surely, 2^352438409 is an apocalyptic number.

It is an amenable number.

352438409 is a deficient number, since it is larger than the sum of its proper divisors (1).

352438409 is an equidigital number, since it uses as much as digits as its factorization.

352438409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 352438409 is about 18773.3430427295. The cubic root of 352438409 is about 706.3626773624.

The spelling of 352438409 in words is "three hundred fifty-two million, four hundred thirty-eight thousand, four hundred nine".