28693404079 has 2 divisors, whose sum is σ = 28693404080. Its totient is φ = 28693404078.

The previous prime is 28693404031. The next prime is 28693404127. The reversal of 28693404079 is 97040439682.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (28693404031) and next prime (28693404127).

It is a cyclic number.

It is not a de Polignac number, because 28693404079 - 2⁹ = 28693403567 is a prime.

It is a super-2 number, since 2×28693404079² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28693404679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14346702039 + 14346702040.

It is an arithmetic number, because the mean of its divisors is an integer number (14346702040).

Almost surely, 2^28693404079 is an apocalyptic number.

28693404079 is a deficient number, since it is larger than the sum of its proper divisors (1).

28693404079 is an equidigital number, since it uses as much as digits as its factorization.

28693404079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 28693404079 in words is "twenty-eight billion, six hundred ninety-three million, four hundred four thousand, seventy-nine".