9906111 has 16 divisors (see below), whose sum is σ = 14759520. Its totient is φ = 6566400.

The previous prime is 9906109. The next prime is 9906119. The reversal of 9906111 is 1116099.

It is not a de Polignac number, because 9906111 - 2¹ = 9906109 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9906119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4261 + ... + 6161.

It is an arithmetic number, because the mean of its divisors is an integer number (922470).

Almost surely, 2^9906111 is an apocalyptic number.

9906111 is a deficient number, since it is larger than the sum of its proper divisors (4853409).

9906111 is a wasteful number, since it uses less digits than its factorization.

9906111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2103 (or 2097 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 9906111 is about 3147.3974963452. The cubic root of 9906111 is about 214.7670886813.

The spelling of 9906111 in words is "nine million, nine hundred six thousand, one hundred eleven".