727920289 has 2 divisors, whose sum is σ = 727920290. Its totient is φ = 727920288.

The previous prime is 727920287. The next prime is 727920293. The reversal of 727920289 is 982029727.

727920289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 491375889 + 236544400 = 22167^2 + 15380^2 .

It is a cyclic number.

It is not a de Polignac number, because 727920289 - 2¹ = 727920287 is a prime.

Together with 727920287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (727920287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363960144 + 363960145.

It is an arithmetic number, because the mean of its divisors is an integer number (363960145).

Almost surely, 2^727920289 is an apocalyptic number.

It is an amenable number.

727920289 is a deficient number, since it is larger than the sum of its proper divisors (1).

727920289 is an equidigital number, since it uses as much as digits as its factorization.

727920289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 727920289 is about 26979.9979429206. The cubic root of 727920289 is about 899.5554549436. Note that the first 3 decimals are identical.

The spelling of 727920289 in words is "seven hundred twenty-seven million, nine hundred twenty thousand, two hundred eighty-nine".