728719049 has 2 divisors, whose sum is σ = 728719050. Its totient is φ = 728719048.

The previous prime is 728719031. The next prime is 728719063. The reversal of 728719049 is 940917827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 727111225 + 1607824 = 26965^2 + 1268^2 .

It is a cyclic number.

It is not a de Polignac number, because 728719049 - 2²⁰ = 727670473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 728718994 and 728719012.

It is not a weakly prime, because it can be changed into another prime (728719009) 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, 364359524 + 364359525.

It is an arithmetic number, because the mean of its divisors is an integer number (364359525).

Almost surely, 2^728719049 is an apocalyptic number.

It is an amenable number.

728719049 is a deficient number, since it is larger than the sum of its proper divisors (1).

728719049 is an equidigital number, since it uses as much as digits as its factorization.

728719049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 728719049 is about 26994.7967023277. The cubic root of 728719049 is about 899.8843674486.

The spelling of 728719049 in words is "seven hundred twenty-eight million, seven hundred nineteen thousand, forty-nine".