128907953 has 2 divisors, whose sum is σ = 128907954. Its totient is φ = 128907952.

The previous prime is 128907941. The next prime is 128907967. The reversal of 128907953 is 359709821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118744609 + 10163344 = 10897^2 + 3188^2 .

It is an emirp because it is prime and its reverse (359709821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128907953 - 2¹⁰ = 128906929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (128904953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64453976 + 64453977.

It is an arithmetic number, because the mean of its divisors is an integer number (64453977).

Almost surely, 2^128907953 is an apocalyptic number.

It is an amenable number.

128907953 is a deficient number, since it is larger than the sum of its proper divisors (1).

128907953 is an equidigital number, since it uses as much as digits as its factorization.

128907953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 128907953 is about 11353.7638252696. The cubic root of 128907953 is about 505.1572271277.

The spelling of 128907953 in words is "one hundred twenty-eight million, nine hundred seven thousand, nine hundred fifty-three".