726291889 has 8 divisors (see below), whose sum is σ = 729040640. Its totient is φ = 723549456.

The previous prime is 726291883. The next prime is 726291911. The reversal of 726291889 is 988192627.

726291889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-726291889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726291883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374767 + ... + 376699.

It is an arithmetic number, because the mean of its divisors is an integer number (91130080).

Almost surely, 2^726291889 is an apocalyptic number.

It is an amenable number.

726291889 is a deficient number, since it is larger than the sum of its proper divisors (2748751).

726291889 is a wasteful number, since it uses less digits than its factorization.

726291889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3159.

The product of its digits is 870912, while the sum is 52.

The square root of 726291889 is about 26949.8031347170. The cubic root of 726291889 is about 898.8841681776.

The spelling of 726291889 in words is "seven hundred twenty-six million, two hundred ninety-one thousand, eight hundred eighty-nine".