28329858829 has 2 divisors, whose sum is σ = 28329858830. Its totient is φ = 28329858828.

The previous prime is 28329858787. The next prime is 28329858833. The reversal of 28329858829 is 92885892382.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25857283204 + 2472575625 = 160802^2 + 49725^2 .

It is a cyclic number.

It is not a de Polignac number, because 28329858829 - 2³¹ = 26182375181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28329858889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14164929414 + 14164929415.

It is an arithmetic number, because the mean of its divisors is an integer number (14164929415).

Almost surely, 2^28329858829 is an apocalyptic number.

It is an amenable number.

28329858829 is a deficient number, since it is larger than the sum of its proper divisors (1).

28329858829 is an equidigital number, since it uses as much as digits as its factorization.

28329858829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39813120, while the sum is 64.

The spelling of 28329858829 in words is "twenty-eight billion, three hundred twenty-nine million, eight hundred fifty-eight thousand, eight hundred twenty-nine".