729889 has 8 divisors (see below), whose sum is σ = 756000. Its totient is φ = 704352.

The previous prime is 729877. The next prime is 729907. The reversal of 729889 is 988927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 729889 - 2⁷ = 729761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5182 + ... + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (94500).

2⁷²⁹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

729889 is a deficient number, since it is larger than the sum of its proper divisors (26111).

729889 is a wasteful number, since it uses less digits than its factorization.

729889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287.

The product of its digits is 72576, while the sum is 43.

The square root of 729889 is about 854.3354142256. The cubic root of 729889 is about 90.0365695009.

The spelling of 729889 in words is "seven hundred twenty-nine thousand, eight hundred eighty-nine".