9677231989 has 2 divisors, whose sum is σ = 9677231990. Its totient is φ = 9677231988.

The previous prime is 9677231951. The next prime is 9677232013. The reversal of 9677231989 is 9891327769.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8200751364 + 1476480625 = 90558^2 + 38425^2 .

It is an emirp because it is prime and its reverse (9891327769) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9677231989 - 2⁹ = 9677231477 is a prime.

It is a super-2 number, since 2×9677231989² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9677231909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4838615994 + 4838615995.

It is an arithmetic number, because the mean of its divisors is an integer number (4838615995).

Almost surely, 2^9677231989 is an apocalyptic number.

It is an amenable number.

9677231989 is a deficient number, since it is larger than the sum of its proper divisors (1).

9677231989 is an equidigital number, since it uses as much as digits as its factorization.

9677231989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10287648, while the sum is 61.

The square root of 9677231989 is about 98372.9230479607. The cubic root of 9677231989 is about 2131.0013137601.

The spelling of 9677231989 in words is "nine billion, six hundred seventy-seven million, two hundred thirty-one thousand, nine hundred eighty-nine".