336697409 has 2 divisors, whose sum is σ = 336697410. Its totient is φ = 336697408.

The previous prime is 336697397. The next prime is 336697411. The reversal of 336697409 is 904796633.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219040000 + 117657409 = 14800^2 + 10847^2 .

It is a cyclic number.

It is not a de Polignac number, because 336697409 - 2²⁴ = 319920193 is a prime.

It is a super-2 number, since 2×336697409² = 226730290454626562, which contains 22 as substring.

Together with 336697411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (336697609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168348704 + 168348705.

It is an arithmetic number, because the mean of its divisors is an integer number (168348705).

Almost surely, 2^336697409 is an apocalyptic number.

It is an amenable number.

336697409 is a deficient number, since it is larger than the sum of its proper divisors (1).

336697409 is an equidigital number, since it uses as much as digits as its factorization.

336697409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 47.

The square root of 336697409 is about 18349.3163087893. The cubic root of 336697409 is about 695.6859910702.

The spelling of 336697409 in words is "three hundred thirty-six million, six hundred ninety-seven thousand, four hundred nine".