723816889 has 2 divisors, whose sum is σ = 723816890. Its totient is φ = 723816888.

The previous prime is 723816883. The next prime is 723816901. The reversal of 723816889 is 988618327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 701349289 + 22467600 = 26483^2 + 4740^2 .

It is a cyclic number.

It is not a de Polignac number, because 723816889 - 2¹¹ = 723814841 is a prime.

It is not a weakly prime, because it can be changed into another prime (723816883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361908444 + 361908445.

It is an arithmetic number, because the mean of its divisors is an integer number (361908445).

Almost surely, 2^723816889 is an apocalyptic number.

It is an amenable number.

723816889 is a deficient number, since it is larger than the sum of its proper divisors (1).

723816889 is an equidigital number, since it uses as much as digits as its factorization.

723816889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 52.

The square root of 723816889 is about 26903.8452456150. The cubic root of 723816889 is about 897.8619573921.

The spelling of 723816889 in words is "seven hundred twenty-three million, eight hundred sixteen thousand, eight hundred eighty-nine".