9172435247 has 2 divisors, whose sum is σ = 9172435248. Its totient is φ = 9172435246.

The previous prime is 9172435243. The next prime is 9172435297. The reversal of 9172435247 is 7425342719.

It is a weak prime.

It is an emirp because it is prime and its reverse (7425342719) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9172435247 - 2² = 9172435243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9172435198 and 9172435207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9172435243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4586217623 + 4586217624.

It is an arithmetic number, because the mean of its divisors is an integer number (4586217624).

Almost surely, 2^9172435247 is an apocalyptic number.

9172435247 is a deficient number, since it is larger than the sum of its proper divisors (1).

9172435247 is an equidigital number, since it uses as much as digits as its factorization.

9172435247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The square root of 9172435247 is about 95772.8314659225. The cubic root of 9172435247 is about 2093.2843096562.

The spelling of 9172435247 in words is "nine billion, one hundred seventy-two million, four hundred thirty-five thousand, two hundred forty-seven".