28959834889 has 2 divisors, whose sum is σ = 28959834890. Its totient is φ = 28959834888.

The previous prime is 28959834863. The next prime is 28959834899. The reversal of 28959834889 is 98843895982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20812967289 + 8146867600 = 144267^2 + 90260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28959834889 is a prime.

It is not a weakly prime, because it can be changed into another prime (28959834899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14479917444 + 14479917445.

It is an arithmetic number, because the mean of its divisors is an integer number (14479917445).

Almost surely, 2^28959834889 is an apocalyptic number.

It is an amenable number.

28959834889 is a deficient number, since it is larger than the sum of its proper divisors (1).

28959834889 is an equidigital number, since it uses as much as digits as its factorization.

28959834889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 358318080, while the sum is 73.

The spelling of 28959834889 in words is "twenty-eight billion, nine hundred fifty-nine million, eight hundred thirty-four thousand, eight hundred eighty-nine".