438545449 has 2 divisors, whose sum is σ = 438545450. Its totient is φ = 438545448.

The previous prime is 438545411. The next prime is 438545467. The reversal of 438545449 is 944545834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313821225 + 124724224 = 17715^2 + 11168^2 .

It is a cyclic number.

It is not a de Polignac number, because 438545449 - 2¹⁵ = 438512681 is a prime.

It is a super-2 number, since 2×438545449² = 384644221677223202, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 438545399 and 438545408.

It is not a weakly prime, because it can be changed into another prime (438545749) 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, 219272724 + 219272725.

It is an arithmetic number, because the mean of its divisors is an integer number (219272725).

Almost surely, 2^438545449 is an apocalyptic number.

It is an amenable number.

438545449 is a deficient number, since it is larger than the sum of its proper divisors (1).

438545449 is an equidigital number, since it uses as much as digits as its factorization.

438545449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1382400, while the sum is 46.

The square root of 438545449 is about 20941.4767626354. The cubic root of 438545449 is about 759.7514474612.

The spelling of 438545449 in words is "four hundred thirty-eight million, five hundred forty-five thousand, four hundred forty-nine".