438873089 has 2 divisors, whose sum is σ = 438873090. Its totient is φ = 438873088.

The previous prime is 438873073. The next prime is 438873091. The reversal of 438873089 is 980378834.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269222464 + 169650625 = 16408^2 + 13025^2 .

It is a cyclic number.

It is not a de Polignac number, because 438873089 - 2⁴ = 438873073 is a prime.

It is a Sophie Germain prime.

Together with 438873091, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (438873289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219436544 + 219436545.

It is an arithmetic number, because the mean of its divisors is an integer number (219436545).

Almost surely, 2^438873089 is an apocalyptic number.

It is an amenable number.

438873089 is a deficient number, since it is larger than the sum of its proper divisors (1).

438873089 is an equidigital number, since it uses as much as digits as its factorization.

438873089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The square root of 438873089 is about 20949.2980550662. The cubic root of 438873089 is about 759.9406053538.

It can be divided in two parts, 4388 and 73089, that added together give a palindrome (77477).

The spelling of 438873089 in words is "four hundred thirty-eight million, eight hundred seventy-three thousand, eighty-nine".