723316849 has 2 divisors, whose sum is σ = 723316850. Its totient is φ = 723316848.

The previous prime is 723316843. The next prime is 723316879. The reversal of 723316849 is 948613327.

723316849 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., 368371249 + 354945600 = 19193^2 + 18840^2 .

It is an emirp because it is prime and its reverse (948613327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 723316849 - 2⁷ = 723316721 is a prime.

It is not a weakly prime, because it can be changed into another prime (723316843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361658424 + 361658425.

It is an arithmetic number, because the mean of its divisors is an integer number (361658425).

Almost surely, 2^723316849 is an apocalyptic number.

It is an amenable number.

723316849 is a deficient number, since it is larger than the sum of its proper divisors (1).

723316849 is an equidigital number, since it uses as much as digits as its factorization.

723316849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 723316849 is about 26894.5505446735. The cubic root of 723316849 is about 897.6551507962.

The spelling of 723316849 in words is "seven hundred twenty-three million, three hundred sixteen thousand, eight hundred forty-nine".