438606229 has 2 divisors, whose sum is σ = 438606230. Its totient is φ = 438606228.

The previous prime is 438606221. The next prime is 438606269. The reversal of 438606229 is 922606834.

It is an a-pointer prime, because the next prime (438606269) can be obtained adding 438606229 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 435682129 + 2924100 = 20873^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 438606229 - 2³ = 438606221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438606191 and 438606200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438606221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219303114 + 219303115.

It is an arithmetic number, because the mean of its divisors is an integer number (219303115).

Almost surely, 2^438606229 is an apocalyptic number.

It is an amenable number.

438606229 is a deficient number, since it is larger than the sum of its proper divisors (1).

438606229 is an equidigital number, since it uses as much as digits as its factorization.

438606229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 438606229 is about 20942.9278994127. The cubic root of 438606229 is about 759.7865449711.

The spelling of 438606229 in words is "four hundred thirty-eight million, six hundred six thousand, two hundred twenty-nine".