889859958987 has 8 divisors (see below), whose sum is σ = 1186484305104. Its totient is φ = 593237792768.

The previous prime is 889859958983. The next prime is 889859959003. The reversal of 889859958987 is 789859958988.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 889859958987 - 2² = 889859958983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 889859958987.

It is not an unprimeable number, because it can be changed into a prime (889859958983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1294603 + ... + 1858955.

It is an arithmetic number, because the mean of its divisors is an integer number (148310538138).

Almost surely, 2^889859958987 is an apocalyptic number.

889859958987 is a deficient number, since it is larger than the sum of its proper divisors (296624346117).

889859958987 is a wasteful number, since it uses less digits than its factorization.

889859958987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089949.

The product of its digits is 37623398400, while the sum is 93.

Subtracting from 889859958987 its reverse (789859958988), we obtain a palindrome (99999999999).

The spelling of 889859958987 in words is "eight hundred eighty-nine billion, eight hundred fifty-nine million, nine hundred fifty-eight thousand, nine hundred eighty-seven".