886669729 has 9 divisors (see below), whose sum is σ = 974964081. Its totient is φ = 805765620.

The previous prime is 886669723. The next prime is 886669733. The reversal of 886669729 is 927966688.

The square root of 886669729 is 29777.

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

It is a de Polignac number, because none of the positive numbers 2^k-886669729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (886669723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 326194 + ... + 328900.

Almost surely, 2^886669729 is an apocalyptic number.

886669729 is the 29777-th square number.

886669729 is the 14889-th centered octagonal number.

It is an amenable number.

886669729 is a deficient number, since it is larger than the sum of its proper divisors (88294352).

886669729 is an frugal number, since it uses more digits than its factorization.

886669729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5436 (or 2718 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 61.

The cubic root of 886669729 is about 960.6989011450.

The spelling of 886669729 in words is "eight hundred eighty-six million, six hundred sixty-nine thousand, seven hundred twenty-nine".