8473729 has 8 divisors (see below), whose sum is σ = 9646272. Its totient is φ = 7368240.

The previous prime is 8473723. The next prime is 8473739. The reversal of 8473729 is 9273748.

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

It is not a de Polignac number, because 8473729 - 2³ = 8473721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8473691 and 8473700.

It is not an unprimeable number, because it can be changed into a prime (8473721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16494 + ... + 16999.

It is an arithmetic number, because the mean of its divisors is an integer number (1205784).

Almost surely, 2^8473729 is an apocalyptic number.

It is an amenable number.

8473729 is a deficient number, since it is larger than the sum of its proper divisors (1172543).

8473729 is a wasteful number, since it uses less digits than its factorization.

8473729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33527.

The product of its digits is 84672, while the sum is 40.

The square root of 8473729 is about 2910.9670214552. The cubic root of 8473729 is about 203.8722848556.

The spelling of 8473729 in words is "eight million, four hundred seventy-three thousand, seven hundred twenty-nine".