9911023 has 2 divisors, whose sum is σ = 9911024. Its totient is φ = 9911022.

The previous prime is 9911009. The next prime is 9911063. The reversal of 9911023 is 3201199.

It is a weak prime.

It is an emirp because it is prime and its reverse (3201199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9911023 - 2¹³ = 9902831 is a prime.

It is a super-3 number, since 3×9911023³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9911063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4955511 + 4955512.

It is an arithmetic number, because the mean of its divisors is an integer number (4955512).

Almost surely, 2^9911023 is an apocalyptic number.

9911023 is a deficient number, since it is larger than the sum of its proper divisors (1).

9911023 is an equidigital number, since it uses as much as digits as its factorization.

9911023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 9911023 is about 3148.1777268763. The cubic root of 9911023 is about 214.8025806324.

The spelling of 9911023 in words is "nine million, nine hundred eleven thousand, twenty-three".