729141457 has 4 divisors (see below), whose sum is σ = 795427056. Its totient is φ = 662855860.

The previous prime is 729141449. The next prime is 729141493. The reversal of 729141457 is 754141927.

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.

It is a cyclic number.

It is not a de Polignac number, because 729141457 - 2³ = 729141449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729144457) 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, 33142783 + ... + 33142804.

It is an arithmetic number, because the mean of its divisors is an integer number (198856764).

Almost surely, 2^729141457 is an apocalyptic number.

It is an amenable number.

729141457 is a deficient number, since it is larger than the sum of its proper divisors (66285599).

729141457 is a wasteful number, since it uses less digits than its factorization.

729141457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66285598.

The product of its digits is 70560, while the sum is 40.

The square root of 729141457 is about 27002.6194470092. The cubic root of 729141457 is about 900.0582089924.

The spelling of 729141457 in words is "seven hundred twenty-nine million, one hundred forty-one thousand, four hundred fifty-seven".