336409 has 4 divisors (see below), whose sum is σ = 337716. Its totient is φ = 335104.

The previous prime is 336403. The next prime is 336419. The reversal of 336409 is 904633.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 138384 + 198025 = 372^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 336409 - 2⁹ = 335897 is a prime.

It is a super-2 number, since 2×336409² = 226342030562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (336403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124 + ... + 829.

It is an arithmetic number, because the mean of its divisors is an integer number (84429).

2³³⁶⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

336409 is a deficient number, since it is larger than the sum of its proper divisors (1307).

336409 is an equidigital number, since it uses as much as digits as its factorization.

336409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 336409 is about 580.0077585688. The cubic root of 336409 is about 69.5487296920.

The spelling of 336409 in words is "three hundred thirty-six thousand, four hundred nine".