8871443249 has 2 divisors, whose sum is σ = 8871443250. Its totient is φ = 8871443248.

The previous prime is 8871443239. The next prime is 8871443281. The reversal of 8871443249 is 9423441788.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7468416400 + 1403026849 = 86420^2 + 37457^2 .

It is a cyclic number.

It is not a de Polignac number, because 8871443249 - 2⁴ = 8871443233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8871443197 and 8871443206.

It is not a weakly prime, because it can be changed into another prime (8871443209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4435721624 + 4435721625.

It is an arithmetic number, because the mean of its divisors is an integer number (4435721625).

Almost surely, 2^8871443249 is an apocalyptic number.

It is an amenable number.

8871443249 is a deficient number, since it is larger than the sum of its proper divisors (1).

8871443249 is an equidigital number, since it uses as much as digits as its factorization.

8871443249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 50.

The square root of 8871443249 is about 94188.3392411184. The cubic root of 8871443249 is about 2070.1322582690.

The spelling of 8871443249 in words is "eight billion, eight hundred seventy-one million, four hundred forty-three thousand, two hundred forty-nine".