8857738847 has 2 divisors, whose sum is σ = 8857738848. Its totient is φ = 8857738846.

The previous prime is 8857738843. The next prime is 8857738867. The reversal of 8857738847 is 7488377588.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8857738847 - 2² = 8857738843 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8857738843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4428869423 + 4428869424.

It is an arithmetic number, because the mean of its divisors is an integer number (4428869424).

Almost surely, 2^8857738847 is an apocalyptic number.

8857738847 is a deficient number, since it is larger than the sum of its proper divisors (1).

8857738847 is an equidigital number, since it uses as much as digits as its factorization.

8857738847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84295680, while the sum is 65.

The square root of 8857738847 is about 94115.5611309841. The cubic root of 8857738847 is about 2069.0657446321.

The spelling of 8857738847 in words is "eight billion, eight hundred fifty-seven million, seven hundred thirty-eight thousand, eight hundred forty-seven".