8969693857 has 2 divisors, whose sum is σ = 8969693858. Its totient is φ = 8969693856.

The previous prime is 8969693851. The next prime is 8969693899. The reversal of 8969693857 is 7583969698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8360542096 + 609151761 = 91436^2 + 24681^2 .

It is a cyclic number.

It is not a de Polignac number, because 8969693857 - 2³ = 8969693849 is a prime.

It is not a weakly prime, because it can be changed into another prime (8969693851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4484846928 + 4484846929.

It is an arithmetic number, because the mean of its divisors is an integer number (4484846929).

Almost surely, 2^8969693857 is an apocalyptic number.

It is an amenable number.

8969693857 is a deficient number, since it is larger than the sum of its proper divisors (1).

8969693857 is an equidigital number, since it uses as much as digits as its factorization.

8969693857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176359680, while the sum is 70.

The square root of 8969693857 is about 94708.4677154055. The cubic root of 8969693857 is about 2077.7464079064.

The spelling of 8969693857 in words is "eight billion, nine hundred sixty-nine million, six hundred ninety-three thousand, eight hundred fifty-seven".