8693948789 has 2 divisors, whose sum is σ = 8693948790. Its totient is φ = 8693948788.

The previous prime is 8693948759. The next prime is 8693948803. The reversal of 8693948789 is 9878493968.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6846238564 + 1847710225 = 82742^2 + 42985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8693948789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8693948749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4346974394 + 4346974395.

It is an arithmetic number, because the mean of its divisors is an integer number (4346974395).

Almost surely, 2^8693948789 is an apocalyptic number.

It is an amenable number.

8693948789 is a deficient number, since it is larger than the sum of its proper divisors (1).

8693948789 is an equidigital number, since it uses as much as digits as its factorization.

8693948789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188116992, while the sum is 71.

The square root of 8693948789 is about 93241.3469926298. The cubic root of 8693948789 is about 2056.2331631995.

The spelling of 8693948789 in words is "eight billion, six hundred ninety-three million, nine hundred forty-eight thousand, seven hundred eighty-nine".