888998887 has 4 divisors (see below), whose sum is σ = 1015998736. Its totient is φ = 761999040.

The previous prime is 888998861. The next prime is 888998909. The reversal of 888998887 is 788899888.

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-888998887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (888998827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63499914 + ... + 63499927.

It is an arithmetic number, because the mean of its divisors is an integer number (253999684).

Almost surely, 2^888998887 is an apocalyptic number.

888998887 is a deficient number, since it is larger than the sum of its proper divisors (126999849).

888998887 is a wasteful number, since it uses less digits than its factorization.

888998887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126999848.

The product of its digits is 148635648, while the sum is 73.

The square root of 888998887 is about 29816.0843673344. The cubic root of 888998887 is about 961.5393730845.

The spelling of 888998887 in words is "eight hundred eighty-eight million, nine hundred ninety-eight thousand, eight hundred eighty-seven".