9691789 has 2 divisors, whose sum is σ = 9691790. Its totient is φ = 9691788.

The previous prime is 9691757. The next prime is 9691807. The reversal of 9691789 is 9871969.

9691789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8940100 + 751689 = 2990^2 + 867^2 .

It is a cyclic number.

It is not a de Polignac number, because 9691789 - 2⁵ = 9691757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9691489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4845894 + 4845895.

It is an arithmetic number, because the mean of its divisors is an integer number (4845895).

Almost surely, 2^9691789 is an apocalyptic number.

It is an amenable number.

9691789 is a deficient number, since it is larger than the sum of its proper divisors (1).

9691789 is an equidigital number, since it uses as much as digits as its factorization.

9691789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 49.

The square root of 9691789 is about 3113.1638247930. The cubic root of 9691789 is about 213.2069300560.

The spelling of 9691789 in words is "nine million, six hundred ninety-one thousand, seven hundred eighty-nine".