726249847 has 2 divisors, whose sum is σ = 726249848. Its totient is φ = 726249846.

The previous prime is 726249827. The next prime is 726249857. The reversal of 726249847 is 748942627.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726249847 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 726249847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726249827) 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, 363124923 + 363124924.

It is an arithmetic number, because the mean of its divisors is an integer number (363124924).

Almost surely, 2^726249847 is an apocalyptic number.

726249847 is a deficient number, since it is larger than the sum of its proper divisors (1).

726249847 is an equidigital number, since it uses as much as digits as its factorization.

726249847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 49.

The square root of 726249847 is about 26949.0231177310. The cubic root of 726249847 is about 898.8668236278.

The spelling of 726249847 in words is "seven hundred twenty-six million, two hundred forty-nine thousand, eight hundred forty-seven".