438750089 has 2 divisors, whose sum is σ = 438750090. Its totient is φ = 438750088.

The previous prime is 438750083. The next prime is 438750097. The reversal of 438750089 is 980057834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 430147600 + 8602489 = 20740^2 + 2933^2 .

It is a cyclic number.

It is not a de Polignac number, because 438750089 - 2¹⁶ = 438684553 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (438750083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219375044 + 219375045.

It is an arithmetic number, because the mean of its divisors is an integer number (219375045).

Almost surely, 2^438750089 is an apocalyptic number.

It is an amenable number.

438750089 is a deficient number, since it is larger than the sum of its proper divisors (1).

438750089 is an equidigital number, since it uses as much as digits as its factorization.

438750089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 438750089 is about 20946.3621901274. The cubic root of 438750089 is about 759.8696042447.

The spelling of 438750089 in words is "four hundred thirty-eight million, seven hundred fifty thousand, eighty-nine".