889647746988 has 144 divisors (see below), whose sum is σ = 2802462679296. Its totient is φ = 213302119680.

The previous prime is 889647746983. The next prime is 889647747013.

889647746988 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×889647746988² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (84).

It is a self number, because there is not a number n which added to its sum of digits gives 889647746988.

It is not an unprimeable number, because it can be changed into a prime (889647746983) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2692431 + ... + 3004742.

It is an arithmetic number, because the mean of its divisors is an integer number (19461546384).

Almost surely, 2^889647746988 is an apocalyptic number.

It is an amenable number.

889647746988 is an abundant number, since it is smaller than the sum of its proper divisors (1912814932308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

889647746988 is a wasteful number, since it uses less digits than its factorization.

889647746988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697224 (or 5697209 counting only the distinct ones).

The product of its digits is 9364045824, while the sum is 84.

The spelling of 889647746988 in words is "eight hundred eighty-nine billion, six hundred forty-seven million, seven hundred forty-six thousand, nine hundred eighty-eight".