9147642997 has 2 divisors, whose sum is σ = 9147642998. Its totient is φ = 9147642996.

The previous prime is 9147642991. The next prime is 9147643013. The reversal of 9147642997 is 7992467419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7570044036 + 1577598961 = 87006^2 + 39719^2 .

It is an emirp because it is prime and its reverse (7992467419) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9147642997 - 2²⁷ = 9013425269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9147642991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4573821498 + 4573821499.

It is an arithmetic number, because the mean of its divisors is an integer number (4573821499).

Almost surely, 2^9147642997 is an apocalyptic number.

It is an amenable number.

9147642997 is a deficient number, since it is larger than the sum of its proper divisors (1).

9147642997 is an equidigital number, since it uses as much as digits as its factorization.

9147642997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 58.

The square root of 9147642997 is about 95643.3113029866. The cubic root of 9147642997 is about 2091.3966228104.

The spelling of 9147642997 in words is "nine billion, one hundred forty-seven million, six hundred forty-two thousand, nine hundred ninety-seven".