723120089 has 2 divisors, whose sum is σ = 723120090. Its totient is φ = 723120088.

The previous prime is 723120067. The next prime is 723120091. The reversal of 723120089 is 980021327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 694849600 + 28270489 = 26360^2 + 5317^2 .

It is an emirp because it is prime and its reverse (980021327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723120089 - 2⁸ = 723119833 is a prime.

Together with 723120091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (723120029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361560044 + 361560045.

It is an arithmetic number, because the mean of its divisors is an integer number (361560045).

Almost surely, 2^723120089 is an apocalyptic number.

It is an amenable number.

723120089 is a deficient number, since it is larger than the sum of its proper divisors (1).

723120089 is an equidigital number, since it uses as much as digits as its factorization.

723120089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 723120089 is about 26890.8923057603. The cubic root of 723120089 is about 897.5737486438.

The spelling of 723120089 in words is "seven hundred twenty-three million, one hundred twenty thousand, eighty-nine".