988825889 has 2 divisors, whose sum is σ = 988825890. Its totient is φ = 988825888.

The previous prime is 988825861. The next prime is 988825891. The reversal of 988825889 is 988528889.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670810000 + 318015889 = 25900^2 + 17833^2 .

It is a cyclic number.

It is not a de Polignac number, because 988825889 - 2⁸ = 988825633 is a prime.

Together with 988825891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (988825589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494412944 + 494412945.

It is an arithmetic number, because the mean of its divisors is an integer number (494412945).

Almost surely, 2^988825889 is an apocalyptic number.

It is an amenable number.

988825889 is a deficient number, since it is larger than the sum of its proper divisors (1).

988825889 is an equidigital number, since it uses as much as digits as its factorization.

988825889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26542080, while the sum is 65.

The square root of 988825889 is about 31445.6020613376. The cubic root of 988825889 is about 996.2613361451.

The spelling of 988825889 in words is "nine hundred eighty-eight million, eight hundred twenty-five thousand, eight hundred eighty-nine".