98888887 has 4 divisors (see below), whose sum is σ = 99643896. Its totient is φ = 98133880.

The previous prime is 98888861. The next prime is 98888921. The reversal of 98888887 is 78888889.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98888887 is a prime.

It is a Duffinian number.

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 (98888837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377308 + ... + 377569.

It is an arithmetic number, because the mean of its divisors is an integer number (24910974).

Almost surely, 2^98888887 is an apocalyptic number.

98888887 is a deficient number, since it is larger than the sum of its proper divisors (755009).

98888887 is a wasteful number, since it uses less digits than its factorization.

98888887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755008.

The product of its digits is 16515072, while the sum is 64.

The square root of 98888887 is about 9944.2891651440. The cubic root of 98888887 is about 462.4333667823.

The spelling of 98888887 in words is "ninety-eight million, eight hundred eighty-eight thousand, eight hundred eighty-seven".