729143029 has 4 divisors (see below), whose sum is σ = 730491340. Its totient is φ = 727794720.

The previous prime is 729143017. The next prime is 729143059. The reversal of 729143029 is 920341927.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 920341927 = 5197 ⋅177091.

It can be written as a sum of positive squares in 2 ways, for example, as 353364804 + 375778225 = 18798^2 + 19385^2 .

It is a cyclic number.

It is not a de Polignac number, because 729143029 - 2⁹ = 729142517 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 (729143059) 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, 673344 + ... + 674425.

It is an arithmetic number, because the mean of its divisors is an integer number (182622835).

Almost surely, 2^729143029 is an apocalyptic number.

It is an amenable number.

729143029 is a deficient number, since it is larger than the sum of its proper divisors (1348311).

729143029 is a wasteful number, since it uses less digits than its factorization.

729143029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348310.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 729143029 is about 27002.6485552806. The cubic root of 729143029 is about 900.0588558218.

The spelling of 729143029 in words is "seven hundred twenty-nine million, one hundred forty-three thousand, twenty-nine".