728374459 has 2 divisors, whose sum is σ = 728374460. Its totient is φ = 728374458.

The previous prime is 728374457. The next prime is 728374483. The reversal of 728374459 is 954473827.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (954473827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 728374459 - 2¹ = 728374457 is a prime.

Together with 728374457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (728374453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364187229 + 364187230.

It is an arithmetic number, because the mean of its divisors is an integer number (364187230).

Almost surely, 2^728374459 is an apocalyptic number.

728374459 is a deficient number, since it is larger than the sum of its proper divisors (1).

728374459 is an equidigital number, since it uses as much as digits as its factorization.

728374459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 49.

The square root of 728374459 is about 26988.4134213184. The cubic root of 728374459 is about 899.7425020548.

The spelling of 728374459 in words is "seven hundred twenty-eight million, three hundred seventy-four thousand, four hundred fifty-nine".