128070799 has 2 divisors, whose sum is σ = 128070800. Its totient is φ = 128070798.

The previous prime is 128070791. The next prime is 128070821. The reversal of 128070799 is 997070821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128070799 - 2³ = 128070791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128070791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64035399 + 64035400.

It is an arithmetic number, because the mean of its divisors is an integer number (64035400).

Almost surely, 2^128070799 is an apocalyptic number.

128070799 is a deficient number, since it is larger than the sum of its proper divisors (1).

128070799 is an equidigital number, since it uses as much as digits as its factorization.

128070799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 128070799 is about 11316.8369697544. The cubic root of 128070799 is about 504.0613206967.

The spelling of 128070799 in words is "one hundred twenty-eight million, seventy thousand, seven hundred ninety-nine".