727423729 has 2 divisors, whose sum is σ = 727423730. Its totient is φ = 727423728.

The previous prime is 727423717. The next prime is 727423769. The reversal of 727423729 is 927324727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 563967504 + 163456225 = 23748^2 + 12785^2 .

It is a cyclic number.

It is not a de Polignac number, because 727423729 - 2¹⁹ = 726899441 is a prime.

It is not a weakly prime, because it can be changed into another prime (727423709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363711864 + 363711865.

It is an arithmetic number, because the mean of its divisors is an integer number (363711865).

Almost surely, 2^727423729 is an apocalyptic number.

It is an amenable number.

727423729 is a deficient number, since it is larger than the sum of its proper divisors (1).

727423729 is an equidigital number, since it uses as much as digits as its factorization.

727423729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 43.

The square root of 727423729 is about 26970.7940001773. The cubic root of 727423729 is about 899.3508607171.

The spelling of 727423729 in words is "seven hundred twenty-seven million, four hundred twenty-three thousand, seven hundred twenty-nine".