729169 has 12 divisors (see below), whose sum is σ = 886464. Its totient is φ = 596904.

The previous prime is 729143. The next prime is 729173. The reversal of 729169 is 961927.

It is not a de Polignac number, because 729169 - 2⁷ = 729041 is a prime.

It is a super-2 number, since 2×729169² = 1063374861122, which contains 22 as substring.

It is a Duffinian number.

729169 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (729139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 804 + ... + 1450.

It is an arithmetic number, because the mean of its divisors is an integer number (73872).

2⁷²⁹¹⁶⁹ is an apocalyptic number.

It is an amenable number.

729169 is a deficient number, since it is larger than the sum of its proper divisors (157295).

729169 is a wasteful number, since it uses less digits than its factorization.

729169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 677 counting only the distinct ones).

The product of its digits is 6804, while the sum is 34.

The square root of 729169 is about 853.9139300890. The cubic root of 729169 is about 90.0069541952.

It can be divided in two parts, 729 and 169, that multiplied together give a square (123201 = 351²).

The spelling of 729169 in words is "seven hundred twenty-nine thousand, one hundred sixty-nine".