729485 has 4 divisors (see below), whose sum is σ = 875388. Its totient is φ = 583584.

The previous prime is 729473. The next prime is 729493. The reversal of 729485 is 584927.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584927 = 7 ⋅83561.

It can be written as a sum of positive squares in 2 ways, for example, as 252004 + 477481 = 502^2 + 691^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729485 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72944 + ... + 72953.

It is an arithmetic number, because the mean of its divisors is an integer number (218847).

2⁷²⁹⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

729485 is a deficient number, since it is larger than the sum of its proper divisors (145903).

729485 is a wasteful number, since it uses less digits than its factorization.

729485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145902.

The product of its digits is 20160, while the sum is 35.

The square root of 729485 is about 854.0989404044. The cubic root of 729485 is about 90.0199544232.

It can be divided in two parts, 7 and 29485, that added together give a palindrome (29492).

The spelling of 729485 in words is "seven hundred twenty-nine thousand, four hundred eighty-five".