988858889 has 2 divisors, whose sum is σ = 988858890. Its totient is φ = 988858888.

The previous prime is 988858867. The next prime is 988858901.

988858889 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 920515600 + 68343289 = 30340^2 + 8267^2 .

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988858889 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (988828889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494429444 + 494429445.

It is an arithmetic number, because the mean of its divisors is an integer number (494429445).

Almost surely, 2^988858889 is an apocalyptic number.

It is an amenable number.

988858889 is a deficient number, since it is larger than the sum of its proper divisors (1).

988858889 is an equidigital number, since it uses as much as digits as its factorization.

988858889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 106168320, while the sum is 71.

The square root of 988858889 is about 31446.1267726250. The cubic root of 988858889 is about 996.2724187360.

The spelling of 988858889 in words is "nine hundred eighty-eight million, eight hundred fifty-eight thousand, eight hundred eighty-nine".