724357889 has 2 divisors, whose sum is σ = 724357890. Its totient is φ = 724357888.

The previous prime is 724357871. The next prime is 724357901. The reversal of 724357889 is 988753427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 723879025 + 478864 = 26905^2 + 692^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724357889 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 724357889.

It is not a weakly prime, because it can be changed into another prime (724357589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362178944 + 362178945.

It is an arithmetic number, because the mean of its divisors is an integer number (362178945).

Almost surely, 2^724357889 is an apocalyptic number.

It is an amenable number.

724357889 is a deficient number, since it is larger than the sum of its proper divisors (1).

724357889 is an equidigital number, since it uses as much as digits as its factorization.

724357889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 53.

The square root of 724357889 is about 26913.8976924562. The cubic root of 724357889 is about 898.0855969881.

The spelling of 724357889 in words is "seven hundred twenty-four million, three hundred fifty-seven thousand, eight hundred eighty-nine".