353142809 has 2 divisors, whose sum is σ = 353142810. Its totient is φ = 353142808.

The previous prime is 353142787. The next prime is 353142817. The reversal of 353142809 is 908241353.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 327610000 + 25532809 = 18100^2 + 5053^2 .

It is a cyclic number.

It is not a de Polignac number, because 353142809 - 2²⁰ = 352094233 is a prime.

It is not a weakly prime, because it can be changed into another prime (353142899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176571404 + 176571405.

It is an arithmetic number, because the mean of its divisors is an integer number (176571405).

Almost surely, 2^353142809 is an apocalyptic number.

It is an amenable number.

353142809 is a deficient number, since it is larger than the sum of its proper divisors (1).

353142809 is an equidigital number, since it uses as much as digits as its factorization.

353142809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 353142809 is about 18792.0943218152. The cubic root of 353142809 is about 706.8329540985.

The spelling of 353142809 in words is "three hundred fifty-three million, one hundred forty-two thousand, eight hundred nine".