726095989 has 2 divisors, whose sum is σ = 726095990. Its totient is φ = 726095988.

The previous prime is 726095987. The next prime is 726095999. The reversal of 726095989 is 989590627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 652393764 + 73702225 = 25542^2 + 8585^2 .

It is a cyclic number.

It is not a de Polignac number, because 726095989 - 2¹ = 726095987 is a prime.

Together with 726095987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726095987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363047994 + 363047995.

It is an arithmetic number, because the mean of its divisors is an integer number (363047995).

Almost surely, 2^726095989 is an apocalyptic number.

It is an amenable number.

726095989 is a deficient number, since it is larger than the sum of its proper divisors (1).

726095989 is an equidigital number, since it uses as much as digits as its factorization.

726095989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The square root of 726095989 is about 26946.1683547030. The cubic root of 726095989 is about 898.8033433532.

The spelling of 726095989 in words is "seven hundred twenty-six million, ninety-five thousand, nine hundred eighty-nine".