8720949133 has 8 divisors (see below), whose sum is σ = 9474906168. Its totient is φ = 7978865664.

The previous prime is 8720949103. The next prime is 8720949227. The reversal of 8720949133 is 3319490278.

It can be written as a sum of positive squares in 4 ways, for example, as 332770564 + 8388178569 = 18242^2 + 91587^2 .

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 8720949133 - 2⁵ = 8720949101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8720949103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2966860 + ... + 2969797.

It is an arithmetic number, because the mean of its divisors is an integer number (1184363271).

Almost surely, 2^8720949133 is an apocalyptic number.

It is an amenable number.

8720949133 is a deficient number, since it is larger than the sum of its proper divisors (753957035).

8720949133 is a wasteful number, since it uses less digits than its factorization.

8720949133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5936783.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 8720949133 is about 93386.0221499984. The cubic root of 8720949133 is about 2058.3596088035.

The spelling of 8720949133 in words is "eight billion, seven hundred twenty million, nine hundred forty-nine thousand, one hundred thirty-three".