9913911001 has 2 divisors, whose sum is σ = 9913911002. Its totient is φ = 9913911000.

The previous prime is 9913910999. The next prime is 9913911023. The reversal of 9913911001 is 1001193199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9541382400 + 372528601 = 97680^2 + 19301^2 .

It is an emirp because it is prime and its reverse (1001193199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9913911001 - 2¹ = 9913910999 is a prime.

Together with 9913910999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9913911041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4956955500 + 4956955501.

It is an arithmetic number, because the mean of its divisors is an integer number (4956955501).

Almost surely, 2^9913911001 is an apocalyptic number.

It is an amenable number.

9913911001 is a deficient number, since it is larger than the sum of its proper divisors (1).

9913911001 is an equidigital number, since it uses as much as digits as its factorization.

9913911001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2187, while the sum is 34.

The square root of 9913911001 is about 99568.6245812405. The cubic root of 9913911001 is about 2148.2344258322.

The spelling of 9913911001 in words is "nine billion, nine hundred thirteen million, nine hundred eleven thousand, one".