28714079409 has 4 divisors (see below), whose sum is σ = 38285439216. Its totient is φ = 19142719604.

The previous prime is 28714079311. The next prime is 28714079417. The reversal of 28714079409 is 90497041782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28714079409 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28714079419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4785679899 + ... + 4785679904.

It is an arithmetic number, because the mean of its divisors is an integer number (9571359804).

Almost surely, 2^28714079409 is an apocalyptic number.

It is an amenable number.

28714079409 is a deficient number, since it is larger than the sum of its proper divisors (9571359807).

28714079409 is an equidigital number, since it uses as much as digits as its factorization.

28714079409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9571359806.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 28714079409 in words is "twenty-eight billion, seven hundred fourteen million, seventy-nine thousand, four hundred nine".