28988858929 has 2 divisors, whose sum is σ = 28988858930. Its totient is φ = 28988858928.

The previous prime is 28988858897. The next prime is 28988858953. The reversal of 28988858929 is 92985888982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27364768929 + 1624090000 = 165423^2 + 40300^2 .

It is a cyclic number.

It is not a de Polignac number, because 28988858929 - 2⁵ = 28988858897 is a prime.

It is not a weakly prime, because it can be changed into another prime (28988852929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14494429464 + 14494429465.

It is an arithmetic number, because the mean of its divisors is an integer number (14494429465).

Almost surely, 2^28988858929 is an apocalyptic number.

It is an amenable number.

28988858929 is a deficient number, since it is larger than the sum of its proper divisors (1).

28988858929 is an equidigital number, since it uses as much as digits as its factorization.

28988858929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 477757440, while the sum is 76.

The spelling of 28988858929 in words is "twenty-eight billion, nine hundred eighty-eight million, eight hundred fifty-eight thousand, nine hundred twenty-nine".