128356339 has 2 divisors, whose sum is σ = 128356340. Its totient is φ = 128356338.

The previous prime is 128356321. The next prime is 128356357. The reversal of 128356339 is 933653821.

It is a balanced prime because it is at equal distance from previous prime (128356321) and next prime (128356357).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128356339 is a prime.

It is a super-2 number, since 2×128356339² = 32950699522965842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128356379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64178169 + 64178170.

It is an arithmetic number, because the mean of its divisors is an integer number (64178170).

Almost surely, 2^128356339 is an apocalyptic number.

128356339 is a deficient number, since it is larger than the sum of its proper divisors (1).

128356339 is an equidigital number, since it uses as much as digits as its factorization.

128356339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The square root of 128356339 is about 11329.4456616376. The cubic root of 128356339 is about 504.4356522823.

The spelling of 128356339 in words is "one hundred twenty-eight million, three hundred fifty-six thousand, three hundred thirty-nine".