88889939 has 2 divisors, whose sum is σ = 88889940.
Its totient is φ = 88889938.
The previous prime is 88889921. The next prime is 88890007. The reversal of 88889939 is 93998888.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 88889939 - 224 = 72112723 is a prime.
It is not a weakly prime, because it can be changed into another prime (88889909) 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, 44444969 + 44444970.
It is an arithmetic number, because the mean of its divisors is an integer number (44444970).
Almost surely, 288889939 is an apocalyptic number.
88889939 is a deficient number, since it is larger than the sum of its proper divisors (1).
88889939 is an equidigital number, since it uses as much as digits as its factorization.
88889939 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 8957952, while the sum is 62.
The square root of 88889939 is about 9428.1461062077.
The cubic root of 88889939 is about 446.2903908286.
The spelling of 88889939 in words is "eighty-eight million, eight hundred eighty-nine thousand, nine hundred thirty-nine".