887985729 has 12 divisors (see below), whose sum is σ = 1350154000. Its totient is φ = 560832984.

The previous prime is 887985689. The next prime is 887985757. The reversal of 887985729 is 927589788.

887985729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 887985729 - 2²⁵ = 854431297 is a prime.

It is a super-2 number, since 2×887985729² = 1577037309815322882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (887985229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2596279 + ... + 2596620.

Almost surely, 2^887985729 is an apocalyptic number.

It is an amenable number.

887985729 is a deficient number, since it is larger than the sum of its proper divisors (462168271).

887985729 is a wasteful number, since it uses less digits than its factorization.

887985729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5192924 (or 5192921 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 63.

The square root of 887985729 is about 29799.0893988390. The cubic root of 887985729 is about 961.1739576943.

The spelling of 887985729 in words is "eight hundred eighty-seven million, nine hundred eighty-five thousand, seven hundred twenty-nine".