128314699 has 4 divisors (see below), whose sum is σ = 128979736. Its totient is φ = 127649664.

The previous prime is 128314661. The next prime is 128314727. The reversal of 128314699 is 996413821.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 996413821 = 13 ⋅76647217.

It is a cyclic number.

It is not a de Polignac number, because 128314699 - 2¹⁵ = 128281931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128314639) 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 in 3 ways as a sum of consecutive naturals, for example, 332229 + ... + 332614.

It is an arithmetic number, because the mean of its divisors is an integer number (32244934).

Almost surely, 2^128314699 is an apocalyptic number.

128314699 is a deficient number, since it is larger than the sum of its proper divisors (665037).

128314699 is an equidigital number, since it uses as much as digits as its factorization.

128314699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665036.

The product of its digits is 93312, while the sum is 43.

The square root of 128314699 is about 11327.6078233668. The cubic root of 128314699 is about 504.3810984974.

The spelling of 128314699 in words is "one hundred twenty-eight million, three hundred fourteen thousand, six hundred ninety-nine".