99711847 has 2 divisors, whose sum is σ = 99711848. Its totient is φ = 99711846.

The previous prime is 99711839. The next prime is 99711893. The reversal of 99711847 is 74811799.

It is an a-pointer prime, because the next prime (99711893) can be obtained adding 99711847 to its sum of digits (46).

It is a weak prime.

It is an emirp because it is prime and its reverse (74811799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99711847 - 2³ = 99711839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99711797 and 99711806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99411847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49855923 + 49855924.

It is an arithmetic number, because the mean of its divisors is an integer number (49855924).

Almost surely, 2^99711847 is an apocalyptic number.

99711847 is a deficient number, since it is larger than the sum of its proper divisors (1).

99711847 is an equidigital number, since it uses as much as digits as its factorization.

99711847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 46.

The square root of 99711847 is about 9985.5819560004. The cubic root of 99711847 is about 463.7126252019.

The spelling of 99711847 in words is "ninety-nine million, seven hundred eleven thousand, eight hundred forty-seven".