9947221463 has 2 divisors, whose sum is σ = 9947221464. Its totient is φ = 9947221462.

The previous prime is 9947221457. The next prime is 9947221469. The reversal of 9947221463 is 3641227499.

It is a balanced prime because it is at equal distance from previous prime (9947221457) and next prime (9947221469).

It is a cyclic number.

It is not a de Polignac number, because 9947221463 - 2¹⁶ = 9947155927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9947221469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4973610731 + 4973610732.

It is an arithmetic number, because the mean of its divisors is an integer number (4973610732).

Almost surely, 2^9947221463 is an apocalyptic number.

9947221463 is a deficient number, since it is larger than the sum of its proper divisors (1).

9947221463 is an equidigital number, since it uses as much as digits as its factorization.

9947221463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 9947221463 is about 99735.7581963460. The cubic root of 9947221463 is about 2150.6377385584.

The spelling of 9947221463 in words is "nine billion, nine hundred forty-seven million, two hundred twenty-one thousand, four hundred sixty-three".