988888887 has 24 divisors (see below), whose sum is σ = 1703430144. Its totient is φ = 540509904.

The previous prime is 988888867. The next prime is 988888891. The reversal of 988888887 is 788888889.

It is not a de Polignac number, because 988888887 - 2⁸ = 988888631 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988888807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339783 + ... + 342680.

It is an arithmetic number, because the mean of its divisors is an integer number (70976256).

Almost surely, 2^988888887 is an apocalyptic number.

988888887 is a deficient number, since it is larger than the sum of its proper divisors (714541257).

988888887 is a wasteful number, since it uses less digits than its factorization.

988888887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682499 (or 682496 counting only the distinct ones).

The product of its digits is 132120576, while the sum is 72.

The square root of 988888887 is about 31446.6037434887. The cubic root of 988888887 is about 996.2824929330.

The spelling of 988888887 in words is "nine hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-seven".