438789137 has 2 divisors, whose sum is σ = 438789138. Its totient is φ = 438789136.

The previous prime is 438789079. The next prime is 438789151. The reversal of 438789137 is 731987834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403849216 + 34939921 = 20096^2 + 5911^2 .

It is a cyclic number.

It is not a de Polignac number, because 438789137 - 2⁸ = 438788881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (438789187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219394568 + 219394569.

It is an arithmetic number, because the mean of its divisors is an integer number (219394569).

Almost surely, 2^438789137 is an apocalyptic number.

It is an amenable number.

438789137 is a deficient number, since it is larger than the sum of its proper divisors (1).

438789137 is an equidigital number, since it uses as much as digits as its factorization.

438789137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 50.

The square root of 438789137 is about 20947.2942644152. The cubic root of 438789137 is about 759.8921459367.

The spelling of 438789137 in words is "four hundred thirty-eight million, seven hundred eighty-nine thousand, one hundred thirty-seven".