726589441 has 2 divisors, whose sum is σ = 726589442. Its totient is φ = 726589440.

The previous prime is 726589433. The next prime is 726589477. The reversal of 726589441 is 144985627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 560695041 + 165894400 = 23679^2 + 12880^2 .

It is an emirp because it is prime and its reverse (144985627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 726589441 - 2³ = 726589433 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 726589391 and 726589400.

It is not a weakly prime, because it can be changed into another prime (726589421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363294720 + 363294721.

It is an arithmetic number, because the mean of its divisors is an integer number (363294721).

Almost surely, 2^726589441 is an apocalyptic number.

It is an amenable number.

726589441 is a deficient number, since it is larger than the sum of its proper divisors (1).

726589441 is an equidigital number, since it uses as much as digits as its factorization.

726589441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The square root of 726589441 is about 26955.3230550109. The cubic root of 726589441 is about 899.0069049949.

The spelling of 726589441 in words is "seven hundred twenty-six million, five hundred eighty-nine thousand, four hundred forty-one".