723490009 has 8 divisors (see below), whose sum is σ = 790186752. Its totient is φ = 656947440.

The previous prime is 723489959. The next prime is 723490043. The reversal of 723490009 is 900094327.

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

It is a cyclic number.

It is not a de Polignac number, because 723490009 - 2¹⁹ = 722965721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723490049) 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 in 7 ways as a sum of consecutive naturals, for example, 28614 + ... + 47599.

It is an arithmetic number, because the mean of its divisors is an integer number (98773344).

Almost surely, 2^723490009 is an apocalyptic number.

It is an amenable number.

723490009 is a deficient number, since it is larger than the sum of its proper divisors (66696743).

723490009 is a wasteful number, since it uses less digits than its factorization.

723490009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77087.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 723490009 is about 26897.7695915479. The cubic root of 723490009 is about 897.7267771123.

The spelling of 723490009 in words is "seven hundred twenty-three million, four hundred ninety thousand, nine".