338421439 has 2 divisors, whose sum is σ = 338421440. Its totient is φ = 338421438.

The previous prime is 338421367. The next prime is 338421443. The reversal of 338421439 is 934124833.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338421439 is a prime.

It is a super-2 number, since 2×338421439² = 229058140749661442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 338421398 and 338421407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338421539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169210719 + 169210720.

It is an arithmetic number, because the mean of its divisors is an integer number (169210720).

Almost surely, 2^338421439 is an apocalyptic number.

338421439 is a deficient number, since it is larger than the sum of its proper divisors (1).

338421439 is an equidigital number, since it uses as much as digits as its factorization.

338421439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 338421439 is about 18396.2343701096. The cubic root of 338421439 is about 696.8713701648.

The spelling of 338421439 in words is "three hundred thirty-eight million, four hundred twenty-one thousand, four hundred thirty-nine".