8780252209 has 3 divisors (see below), whose sum is σ = 8780345913. Its totient is φ = 8780158506.

The previous prime is 8780252197. The next prime is 8780252227. The reversal of 8780252209 is 9022520878.

The square root of 8780252209 is 93703.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 8780252209 - 2⁵ = 8780252177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8780252269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 46852 + ... + 140554.

It is an arithmetic number, because the mean of its divisors is an integer number (2926781971).

Almost surely, 2^8780252209 is an apocalyptic number.

8780252209 is the 93703-rd square number.

8780252209 is the 46852-nd centered octagonal number.

It is an amenable number.

8780252209 is a deficient number, since it is larger than the sum of its proper divisors (93704).

8780252209 is an frugal number, since it uses more digits than its factorization.

8780252209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187406 (or 93703 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The cubic root of 8780252209 is about 2063.0147370008.

The spelling of 8780252209 in words is "eight billion, seven hundred eighty million, two hundred fifty-two thousand, two hundred nine".