338412817 has 2 divisors, whose sum is σ = 338412818. Its totient is φ = 338412816.

The previous prime is 338412793. The next prime is 338412821. The reversal of 338412817 is 718214833.

It is a Cunningham number, because it is equal to 18396²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338412816 + 1 = 18396^2 + 1^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338412817 is a prime.

It is a super-2 number, since 2×338412817² = 229046469419750978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338412827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169206408 + 169206409.

It is an arithmetic number, because the mean of its divisors is an integer number (169206409).

Almost surely, 2^338412817 is an apocalyptic number.

It is an amenable number.

338412817 is a deficient number, since it is larger than the sum of its proper divisors (1).

338412817 is an equidigital number, since it uses as much as digits as its factorization.

338412817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 338412817 is about 18396.0000271798. Note that the first 4 decimals coincide. The cubic root of 338412817 is about 696.8654520252.

The spelling of 338412817 in words is "three hundred thirty-eight million, four hundred twelve thousand, eight hundred seventeen".