8871944507 has 2 divisors, whose sum is σ = 8871944508. Its totient is φ = 8871944506.

The previous prime is 8871944453. The next prime is 8871944563. The reversal of 8871944507 is 7054491788.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8871944507 - 2¹⁶ = 8871878971 is a prime.

It is a super-2 number, since 2×8871944507² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8871944597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4435972253 + 4435972254.

It is an arithmetic number, because the mean of its divisors is an integer number (4435972254).

Almost surely, 2^8871944507 is an apocalyptic number.

8871944507 is a deficient number, since it is larger than the sum of its proper divisors (1).

8871944507 is an equidigital number, since it uses as much as digits as its factorization.

8871944507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The square root of 8871944507 is about 94191.0001380174. Note that the first 3 decimals coincide. The cubic root of 8871944507 is about 2070.1712466945.

The spelling of 8871944507 in words is "eight billion, eight hundred seventy-one million, nine hundred forty-four thousand, five hundred seven".