334840409 has 4 divisors (see below), whose sum is σ = 346386660. Its totient is φ = 323294160.

The previous prime is 334840397. The next prime is 334840421. The reversal of 334840409 is 904048433.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (334840397) and next prime (334840421).

It can be written as a sum of positive squares in 2 ways, for example, as 267649600 + 67190809 = 16360^2 + 8197^2 .

It is a cyclic number.

It is not a de Polignac number, because 334840409 - 2¹⁶ = 334774873 is a prime.

It is a super-2 number, since 2×334840409² = 224236198998574562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (334840459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5773082 + ... + 5773139.

It is an arithmetic number, because the mean of its divisors is an integer number (86596665).

Almost surely, 2^334840409 is an apocalyptic number.

It is an amenable number.

334840409 is a deficient number, since it is larger than the sum of its proper divisors (11546251).

334840409 is a wasteful number, since it uses less digits than its factorization.

334840409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11546250.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 334840409 is about 18298.6450044805. The cubic root of 334840409 is about 694.4046513836.

The spelling of 334840409 in words is "three hundred thirty-four million, eight hundred forty thousand, four hundred nine".