11945806 has 4 divisors (see below), whose sum is σ = 17918712. Its totient is φ = 5972902.

The previous prime is 11945797. The next prime is 11945807. The reversal of 11945806 is 60854911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60854911 = 13 ⋅4681147.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11945807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2986450 + ... + 2986453.

It is an arithmetic number, because the mean of its divisors is an integer number (4479678).

Almost surely, 2^11945806 is an apocalyptic number.

11945806 is a deficient number, since it is larger than the sum of its proper divisors (5972906).

11945806 is an equidigital number, since it uses as much as digits as its factorization.

11945806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5972905.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 11945806 is about 3456.2705333929. The cubic root of 11945806 is about 228.5976803554.

The spelling of 11945806 in words is "eleven million, nine hundred forty-five thousand, eight hundred six".