8742662447 has 2 divisors, whose sum is σ = 8742662448. Its totient is φ = 8742662446.

The previous prime is 8742662443. The next prime is 8742662483. The reversal of 8742662447 is 7442662478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8742662447 - 2² = 8742662443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8742662395 and 8742662404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8742662441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4371331223 + 4371331224.

It is an arithmetic number, because the mean of its divisors is an integer number (4371331224).

Almost surely, 2^8742662447 is an apocalyptic number.

8742662447 is a deficient number, since it is larger than the sum of its proper divisors (1).

8742662447 is an equidigital number, since it uses as much as digits as its factorization.

8742662447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3612672, while the sum is 50.

The square root of 8742662447 is about 93502.2055729168. The cubic root of 8742662447 is about 2060.0664859775.

The spelling of 8742662447 in words is "eight billion, seven hundred forty-two million, six hundred sixty-two thousand, four hundred forty-seven".