438211439 has 2 divisors, whose sum is σ = 438211440. Its totient is φ = 438211438.

The previous prime is 438211391. The next prime is 438211447. The reversal of 438211439 is 934112834.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438211439 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 438211399 and 438211408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438211139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219105719 + 219105720.

It is an arithmetic number, because the mean of its divisors is an integer number (219105720).

Almost surely, 2^438211439 is an apocalyptic number.

438211439 is a deficient number, since it is larger than the sum of its proper divisors (1).

438211439 is an equidigital number, since it uses as much as digits as its factorization.

438211439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 438211439 is about 20933.5004000764. The cubic root of 438211439 is about 759.5585149431.

The spelling of 438211439 in words is "four hundred thirty-eight million, two hundred eleven thousand, four hundred thirty-nine".