889639638140 has 48 divisors (see below), whose sum is σ = 2157970810464. Its totient is φ = 304475596800.

The previous prime is 889639638137. The next prime is 889639638161. The reversal of 889639638140 is 41836936988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118932041 + ... + 118939520.

It is an arithmetic number, because the mean of its divisors is an integer number (44957725218).

Almost surely, 2^889639638140 is an apocalyptic number.

It is an amenable number.

889639638140 is an abundant number, since it is smaller than the sum of its proper divisors (1268331172324).

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

889639638140 is a wasteful number, since it uses less digits than its factorization.

889639638140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237871598 (or 237871596 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 65.

The spelling of 889639638140 in words is "eight hundred eighty-nine billion, six hundred thirty-nine million, six hundred thirty-eight thousand, one hundred forty".