338428217 has 2 divisors, whose sum is σ = 338428218. Its totient is φ = 338428216.

The previous prime is 338428201. The next prime is 338428229. The reversal of 338428217 is 712824833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274763776 + 63664441 = 16576^2 + 7979^2 .

It is a cyclic number.

It is not a de Polignac number, because 338428217 - 2⁴ = 338428201 is a prime.

It is a super-2 number, since 2×338428217² = 229067316123598178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (338428117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169214108 + 169214109.

It is an arithmetic number, because the mean of its divisors is an integer number (169214109).

Almost surely, 2^338428217 is an apocalyptic number.

It is an amenable number.

338428217 is a deficient number, since it is larger than the sum of its proper divisors (1).

338428217 is an equidigital number, since it uses as much as digits as its factorization.

338428217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 338428217 is about 18396.4185916716. The cubic root of 338428217 is about 696.8760225125.

The spelling of 338428217 in words is "three hundred thirty-eight million, four hundred twenty-eight thousand, two hundred seventeen".