8908566973 has 2 divisors, whose sum is σ = 8908566974. Its totient is φ = 8908566972.

The previous prime is 8908566959. The next prime is 8908566991. The reversal of 8908566973 is 3796658098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7331126884 + 1577440089 = 85622^2 + 39717^2 .

It is a cyclic number.

It is not a de Polignac number, because 8908566973 - 2²⁵ = 8875012541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8908566673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4454283486 + 4454283487.

It is an arithmetic number, because the mean of its divisors is an integer number (4454283487).

Almost surely, 2^8908566973 is an apocalyptic number.

It is an amenable number.

8908566973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8908566973 is an equidigital number, since it uses as much as digits as its factorization.

8908566973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The square root of 8908566973 is about 94385.2052654440. The cubic root of 8908566973 is about 2073.0158202489.

The spelling of 8908566973 in words is "eight billion, nine hundred eight million, five hundred sixty-six thousand, nine hundred seventy-three".