727144729 has 2 divisors, whose sum is σ = 727144730. Its totient is φ = 727144728.

The previous prime is 727144721. The next prime is 727144783. The reversal of 727144729 is 927441727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 708997129 + 18147600 = 26627^2 + 4260^2 .

It is an emirp because it is prime and its reverse (927441727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 727144729 - 2³ = 727144721 is a prime.

It is not a weakly prime, because it can be changed into another prime (727144721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363572364 + 363572365.

It is an arithmetic number, because the mean of its divisors is an integer number (363572365).

Almost surely, 2^727144729 is an apocalyptic number.

It is an amenable number.

727144729 is a deficient number, since it is larger than the sum of its proper divisors (1).

727144729 is an equidigital number, since it uses as much as digits as its factorization.

727144729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 197568, while the sum is 43.

The square root of 727144729 is about 26965.6212426119. The cubic root of 727144729 is about 899.2358653957.

The spelling of 727144729 in words is "seven hundred twenty-seven million, one hundred forty-four thousand, seven hundred twenty-nine".