4991106 has 8 divisors (see below), whose sum is σ = 9982224. Its totient is φ = 1663700.

The previous prime is 4991101. The next prime is 4991123. The reversal of 4991106 is 6011994.

It is a sphenic number, since it is the product of 3 distinct primes.

4991106 is an admirable number.

It is a super-2 number, since 2×4991106² = 49822278206472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4991101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415920 + ... + 415931.

It is an arithmetic number, because the mean of its divisors is an integer number (1247778).

Almost surely, 2^4991106 is an apocalyptic number.

4991106 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4991106 is a wasteful number, since it uses less digits than its factorization.

4991106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831856.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 4991106 is about 2234.0783334521. The cubic root of 4991106 is about 170.8961443168.

The spelling of 4991106 in words is "four million, nine hundred ninety-one thousand, one hundred six".