723990473 has 2 divisors, whose sum is σ = 723990474. Its totient is φ = 723990472.

The previous prime is 723990451. The next prime is 723990557. The reversal of 723990473 is 374099327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 718936969 + 5053504 = 26813^2 + 2248^2 .

It is a cyclic number.

It is not a de Polignac number, because 723990473 - 2¹² = 723986377 is a prime.

It is not a weakly prime, because it can be changed into another prime (723990973) 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, 361995236 + 361995237.

It is an arithmetic number, because the mean of its divisors is an integer number (361995237).

Almost surely, 2^723990473 is an apocalyptic number.

It is an amenable number.

723990473 is a deficient number, since it is larger than the sum of its proper divisors (1).

723990473 is an equidigital number, since it uses as much as digits as its factorization.

723990473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 44.

The square root of 723990473 is about 26907.0710594817. The cubic root of 723990473 is about 897.9337260098.

The spelling of 723990473 in words is "seven hundred twenty-three million, nine hundred ninety thousand, four hundred seventy-three".