9940111 has 2 divisors, whose sum is σ = 9940112. Its totient is φ = 9940110.

The previous prime is 9940093. The next prime is 9940123. The reversal of 9940111 is 1110499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9940111 - 2¹⁹ = 9415823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9940811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4970055 + 4970056.

It is an arithmetic number, because the mean of its divisors is an integer number (4970056).

Almost surely, 2^9940111 is an apocalyptic number.

9940111 is a deficient number, since it is larger than the sum of its proper divisors (1).

9940111 is an equidigital number, since it uses as much as digits as its factorization.

9940111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 9940111 is about 3152.7941575688. The cubic root of 9940111 is about 215.0125177496.

The spelling of 9940111 in words is "nine million, nine hundred forty thousand, one hundred eleven".