9997226243 has 2 divisors, whose sum is σ = 9997226244. Its totient is φ = 9997226242.

The previous prime is 9997226233. The next prime is 9997226279. The reversal of 9997226243 is 3426227999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9997226243 - 2³⁰ = 8923484419 is a prime.

It is not a weakly prime, because it can be changed into another prime (9997226233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998613121 + 4998613122.

It is an arithmetic number, because the mean of its divisors is an integer number (4998613122).

Almost surely, 2^9997226243 is an apocalyptic number.

9997226243 is a deficient number, since it is larger than the sum of its proper divisors (1).

9997226243 is an equidigital number, since it uses as much as digits as its factorization.

9997226243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 53.

The square root of 9997226243 is about 99986.1302531506. The cubic root of 9997226243 is about 2154.2354756683.

The spelling of 9997226243 in words is "nine billion, nine hundred ninety-seven million, two hundred twenty-six thousand, two hundred forty-three".