438730211 has 2 divisors, whose sum is σ = 438730212. Its totient is φ = 438730210.

The previous prime is 438730207. The next prime is 438730261. The reversal of 438730211 is 112037834.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 438730211 - 2² = 438730207 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (438730261) 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, 219365105 + 219365106.

It is an arithmetic number, because the mean of its divisors is an integer number (219365106).

Almost surely, 2^438730211 is an apocalyptic number.

438730211 is a deficient number, since it is larger than the sum of its proper divisors (1).

438730211 is an equidigital number, since it uses as much as digits as its factorization.

438730211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 438730211 is about 20945.8876870855. The cubic root of 438730211 is about 759.8581285273.

The spelling of 438730211 in words is "four hundred thirty-eight million, seven hundred thirty thousand, two hundred eleven".