8519729 has 4 divisors (see below), whose sum is σ = 8890176. Its totient is φ = 8149284.

The previous prime is 8519723. The next prime is 8519743. The reversal of 8519729 is 9279158.

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 not a de Polignac number, because 8519729 - 2⁸ = 8519473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8519723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185189 + ... + 185234.

It is an arithmetic number, because the mean of its divisors is an integer number (2222544).

Almost surely, 2^8519729 is an apocalyptic number.

It is an amenable number.

8519729 is a deficient number, since it is larger than the sum of its proper divisors (370447).

8519729 is a wasteful number, since it uses less digits than its factorization.

8519729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370446.

The product of its digits is 45360, while the sum is 41.

The square root of 8519729 is about 2918.8574819610. The cubic root of 8519729 is about 204.2405291176.

The spelling of 8519729 in words is "eight million, five hundred nineteen thousand, seven hundred twenty-nine".