889043437881 has 27 divisors (see below), whose sum is σ = 1303904658693. Its totient is φ = 583724960280.

The previous prime is 889043437847. The next prime is 889043437903. The reversal of 889043437881 is 188734340988.

The square root of 889043437881 is 942891.

It is a perfect power (a square), and thus also a powerful number.

889043437881 is a `hidden beast` number, since 8 + 8 + 90 + 434 + 37 + 8 + 81 = 666.

It is not a de Polignac number, because 889043437881 - 2²⁷ = 888909220153 is a prime.

It is a super-2 number, since 2×889043437881² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (889043432881) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 189518746 + ... + 189523436.

Almost surely, 2^889043437881 is an apocalyptic number.

889043437881 is the 942891-st square number.

889043437881 is the 471446-th centered octagonal number.

It is an amenable number.

889043437881 is a deficient number, since it is larger than the sum of its proper divisors (414861220812).

889043437881 is an frugal number, since it uses more digits than its factorization.

889043437881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9522 (or 4761 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 889043437881 in words is "eight hundred eighty-nine billion, forty-three million, four hundred thirty-seven thousand, eight hundred eighty-one".