726309049 has 4 divisors (see below), whose sum is σ = 726866064. Its totient is φ = 725752036.

The previous prime is 726308981. The next prime is 726309083. The reversal of 726309049 is 940903627.

726309049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726309049 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726309349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276547 + ... + 279160.

It is an arithmetic number, because the mean of its divisors is an integer number (181716516).

Almost surely, 2^726309049 is an apocalyptic number.

It is an amenable number.

726309049 is a deficient number, since it is larger than the sum of its proper divisors (557015).

726309049 is a wasteful number, since it uses less digits than its factorization.

726309049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557014.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 726309049 is about 26950.1215025090. The cubic root of 726309049 is about 898.8912473933.

The spelling of 726309049 in words is "seven hundred twenty-six million, three hundred nine thousand, forty-nine".