63128339 has 2 divisors, whose sum is σ = 63128340. Its totient is φ = 63128338.

The previous prime is 63128297. The next prime is 63128341. The reversal of 63128339 is 93382136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63128339 - 2⁸ = 63128083 is a prime.

Together with 63128341, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 63128299 and 63128308.

It is not a weakly prime, because it can be changed into another prime (63128239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31564169 + 31564170.

It is an arithmetic number, because the mean of its divisors is an integer number (31564170).

Almost surely, 2^63128339 is an apocalyptic number.

63128339 is a deficient number, since it is larger than the sum of its proper divisors (1).

63128339 is an equidigital number, since it uses as much as digits as its factorization.

63128339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 63128339 is about 7945.3344171281. The cubic root of 63128339 is about 398.1757323503.

The spelling of 63128339 in words is "sixty-three million, one hundred twenty-eight thousand, three hundred thirty-nine".