338578489 has 2 divisors, whose sum is σ = 338578490. Its totient is φ = 338578488.

The previous prime is 338578483. The next prime is 338578501. The reversal of 338578489 is 984875833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207590464 + 130988025 = 14408^2 + 11445^2 .

It is a cyclic number.

It is not a de Polignac number, because 338578489 - 2⁹ = 338577977 is a prime.

It is a super-2 number, since 2×338578489² = 229270786427046242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338578483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169289244 + 169289245.

It is an arithmetic number, because the mean of its divisors is an integer number (169289245).

Almost surely, 2^338578489 is an apocalyptic number.

It is an amenable number.

338578489 is a deficient number, since it is larger than the sum of its proper divisors (1).

338578489 is an equidigital number, since it uses as much as digits as its factorization.

338578489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 55.

The square root of 338578489 is about 18400.5024116191. The cubic root of 338578489 is about 696.9791516770.

The spelling of 338578489 in words is "three hundred thirty-eight million, five hundred seventy-eight thousand, four hundred eighty-nine".