729869 has 8 divisors (see below), whose sum is σ = 841728. Its totient is φ = 619920.

The previous prime is 729851. The next prime is 729871. The reversal of 729869 is 968927.

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

It is not a de Polignac number, because 729869 - 2⁸ = 729613 is a prime.

It is a super-2 number, since 2×729869² = 1065417514322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729269) 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, 479 + ... + 1299.

It is an arithmetic number, because the mean of its divisors is an integer number (105216).

2⁷²⁹⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

729869 is a deficient number, since it is larger than the sum of its proper divisors (111859).

729869 is a wasteful number, since it uses less digits than its factorization.

729869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955.

The product of its digits is 54432, while the sum is 41.

The square root of 729869 is about 854.3237091407. The cubic root of 729869 is about 90.0357471166.

The spelling of 729869 in words is "seven hundred twenty-nine thousand, eight hundred sixty-nine".