438838249 has 2 divisors, whose sum is σ = 438838250. Its totient is φ = 438838248.

The previous prime is 438838243. The next prime is 438838271. The reversal of 438838249 is 942838834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424154025 + 14684224 = 20595^2 + 3832^2 .

It is a cyclic number.

It is not a de Polignac number, because 438838249 - 2¹⁷ = 438707177 is a prime.

It is not a weakly prime, because it can be changed into another prime (438838243) 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, 219419124 + 219419125.

It is an arithmetic number, because the mean of its divisors is an integer number (219419125).

Almost surely, 2^438838249 is an apocalyptic number.

It is an amenable number.

438838249 is a deficient number, since it is larger than the sum of its proper divisors (1).

438838249 is an equidigital number, since it uses as much as digits as its factorization.

438838249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1327104, while the sum is 49.

The square root of 438838249 is about 20948.4665071217. The cubic root of 438838249 is about 759.9204954921.

The spelling of 438838249 in words is "four hundred thirty-eight million, eight hundred thirty-eight thousand, two hundred forty-nine".