128958707 has 2 divisors, whose sum is σ = 128958708. Its totient is φ = 128958706.

The previous prime is 128958691. The next prime is 128958749. The reversal of 128958707 is 707859821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128958707 - 2⁴ = 128958691 is a prime.

It is a super-2 number, since 2×128958707² = 33260696222223698, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128928707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64479353 + 64479354.

It is an arithmetic number, because the mean of its divisors is an integer number (64479354).

Almost surely, 2^128958707 is an apocalyptic number.

128958707 is a deficient number, since it is larger than the sum of its proper divisors (1).

128958707 is an equidigital number, since it uses as much as digits as its factorization.

128958707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 47.

The square root of 128958707 is about 11355.9987231419. The cubic root of 128958707 is about 505.2235157344.

The spelling of 128958707 in words is "one hundred twenty-eight million, nine hundred fifty-eight thousand, seven hundred seven".