340033409 has 2 divisors, whose sum is σ = 340033410. Its totient is φ = 340033408.

The previous prime is 340033373. The next prime is 340033411. The reversal of 340033409 is 904330043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339591184 + 442225 = 18428^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 340033409 - 2⁸ = 340033153 is a prime.

It is a super-2 number, since 2×340033409² = 231245438472322562, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 340033411, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (340033429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170016704 + 170016705.

It is an arithmetic number, because the mean of its divisors is an integer number (170016705).

Almost surely, 2^340033409 is an apocalyptic number.

It is an amenable number.

340033409 is a deficient number, since it is larger than the sum of its proper divisors (1).

340033409 is an equidigital number, since it uses as much as digits as its factorization.

340033409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 340033409 is about 18439.9948210405. The cubic root of 340033409 is about 697.9760646467.

The spelling of 340033409 in words is "three hundred forty million, thirty-three thousand, four hundred nine".