8571872749 has 8 divisors (see below), whose sum is σ = 9384180192. Its totient is φ = 7765073040.

The previous prime is 8571872731. The next prime is 8571872773. The reversal of 8571872749 is 9472781758.

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 8571872749 - 2⁵ = 8571872717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8571872693 and 8571872702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8571872779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1373674 + ... + 1379899.

It is an arithmetic number, because the mean of its divisors is an integer number (1173022524).

Almost surely, 2^8571872749 is an apocalyptic number.

It is an amenable number.

8571872749 is a deficient number, since it is larger than the sum of its proper divisors (812307443).

8571872749 is a wasteful number, since it uses less digits than its factorization.

8571872749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2753867.

The product of its digits is 7902720, while the sum is 58.

The square root of 8571872749 is about 92584.4087792324. The cubic root of 8571872749 is about 2046.5635664300.

Subtracting 8571872749 from its reverse (9472781758), we obtain a palindrome (900909009).

The spelling of 8571872749 in words is "eight billion, five hundred seventy-one million, eight hundred seventy-two thousand, seven hundred forty-nine".