43381339 has 2 divisors, whose sum is σ = 43381340. Its totient is φ = 43381338.

The previous prime is 43381333. The next prime is 43381379. The reversal of 43381339 is 93318334.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43381339 - 2⁷ = 43381211 is a prime.

It is not a weakly prime, because it can be changed into another prime (43381333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21690669 + 21690670.

It is an arithmetic number, because the mean of its divisors is an integer number (21690670).

Almost surely, 2^43381339 is an apocalyptic number.

43381339 is a deficient number, since it is larger than the sum of its proper divisors (1).

43381339 is an equidigital number, since it uses as much as digits as its factorization.

43381339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 34.

The square root of 43381339 is about 6586.4511688769. The cubic root of 43381339 is about 351.3724047498.

The spelling of 43381339 in words is "forty-three million, three hundred eighty-one thousand, three hundred thirty-nine".