99711641 has 2 divisors, whose sum is σ = 99711642. Its totient is φ = 99711640.

The previous prime is 99711629. The next prime is 99711671. The reversal of 99711641 is 14611799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94090000 + 5621641 = 9700^2 + 2371^2 .

It is an emirp because it is prime and its reverse (14611799) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99711641 is a prime.

It is a super-2 number, since 2×99711641² = 19884822701825762, which contains 22 as substring.

It is a Chen prime.

It is equal to p_5745782 and since 99711641 and 5745782 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 99711595 and 99711604.

It is not a weakly prime, because it can be changed into another prime (99711671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49855820 + 49855821.

It is an arithmetic number, because the mean of its divisors is an integer number (49855821).

Almost surely, 2^99711641 is an apocalyptic number.

It is an amenable number.

99711641 is a deficient number, since it is larger than the sum of its proper divisors (1).

99711641 is an equidigital number, since it uses as much as digits as its factorization.

99711641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 38.

The square root of 99711641 is about 9985.5716411230. The cubic root of 99711641 is about 463.7123058655.

The spelling of 99711641 in words is "ninety-nine million, seven hundred eleven thousand, six hundred forty-one".