438865943 has 2 divisors, whose sum is σ = 438865944. Its totient is φ = 438865942.

The previous prime is 438865939. The next prime is 438865963. The reversal of 438865943 is 349568834.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 438865943 - 2² = 438865939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438865891 and 438865900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438865963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219432971 + 219432972.

It is an arithmetic number, because the mean of its divisors is an integer number (219432972).

Almost surely, 2^438865943 is an apocalyptic number.

438865943 is a deficient number, since it is larger than the sum of its proper divisors (1).

438865943 is an equidigital number, since it uses as much as digits as its factorization.

438865943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 50.

The square root of 438865943 is about 20949.1274997313. The cubic root of 438865943 is about 759.9364807255.

The spelling of 438865943 in words is "four hundred thirty-eight million, eight hundred sixty-five thousand, nine hundred forty-three".