353140409 has 2 divisors, whose sum is σ = 353140410. Its totient is φ = 353140408.

The previous prime is 353140393. The next prime is 353140471. The reversal of 353140409 is 904041353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276490384 + 76650025 = 16628^2 + 8755^2 .

It is an emirp because it is prime and its reverse (904041353) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 353140409 - 2⁴ = 353140393 is a prime.

It is not a weakly prime, because it can be changed into another prime (353140309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176570204 + 176570205.

It is an arithmetic number, because the mean of its divisors is an integer number (176570205).

Almost surely, 2^353140409 is an apocalyptic number.

It is an amenable number.

353140409 is a deficient number, since it is larger than the sum of its proper divisors (1).

353140409 is an equidigital number, since it uses as much as digits as its factorization.

353140409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 353140409 is about 18792.0304650668. The cubic root of 353140409 is about 706.8313528550.

The spelling of 353140409 in words is "three hundred fifty-three million, one hundred forty thousand, four hundred nine".