729253 has 4 divisors (see below), whose sum is σ = 833440. Its totient is φ = 625068.

The previous prime is 729217. The next prime is 729257. The reversal of 729253 is 352927.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352927 = 53 ⋅6659.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52083 + ... + 52096.

It is an arithmetic number, because the mean of its divisors is an integer number (208360).

2⁷²⁹²⁵³ is an apocalyptic number.

It is an amenable number.

729253 is a deficient number, since it is larger than the sum of its proper divisors (104187).

729253 is a wasteful number, since it uses less digits than its factorization.

729253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104186.

The product of its digits is 3780, while the sum is 28.

The square root of 729253 is about 853.9631139575. The cubic root of 729253 is about 90.0104103184.

The spelling of 729253 in words is "seven hundred twenty-nine thousand, two hundred fifty-three".