128449007 has 2 divisors, whose sum is σ = 128449008. Its totient is φ = 128449006.

The previous prime is 128448913. The next prime is 128449019. The reversal of 128449007 is 700944821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128449007 - 2⁸ = 128448751 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128440007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64224503 + 64224504.

It is an arithmetic number, because the mean of its divisors is an integer number (64224504).

Almost surely, 2^128449007 is an apocalyptic number.

128449007 is a deficient number, since it is larger than the sum of its proper divisors (1).

128449007 is an equidigital number, since it uses as much as digits as its factorization.

128449007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 128449007 is about 11333.5346207615. The cubic root of 128449007 is about 504.5570170147.

The spelling of 128449007 in words is "one hundred twenty-eight million, four hundred forty-nine thousand, seven".