729886 has 4 divisors (see below), whose sum is σ = 1094832. Its totient is φ = 364942.

The previous prime is 729877. The next prime is 729907. The reversal of 729886 is 688927.

729886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 688927 = 691 ⋅997.

It is a congruent number.

It is an unprimeable number.

729886 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182470 + ... + 182473.

It is an arithmetic number, because the mean of its divisors is an integer number (273708).

2⁷²⁹⁸⁸⁶ is an apocalyptic number.

729886 is a deficient number, since it is larger than the sum of its proper divisors (364946).

729886 is a wasteful number, since it uses less digits than its factorization.

729886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364945.

The product of its digits is 48384, while the sum is 40.

The square root of 729886 is about 854.3336584731. Note that the first 3 decimals coincide. The cubic root of 729886 is about 90.0364461442.

The spelling of 729886 in words is "seven hundred twenty-nine thousand, eight hundred eighty-six".