11985938 has 4 divisors (see below), whose sum is σ = 17978910. Its totient is φ = 5992968.

The previous prime is 11985937. The next prime is 11985971. The reversal of 11985938 is 83958911.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10804369 + 1181569 = 3287^2 + 1087^2 .

It is not an unprimeable number, because it can be changed into a prime (11985937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2996483 + ... + 2996486.

Almost surely, 2^11985938 is an apocalyptic number.

11985938 is a deficient number, since it is larger than the sum of its proper divisors (5992972).

11985938 is an equidigital number, since it uses as much as digits as its factorization.

11985938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992971.

The product of its digits is 77760, while the sum is 44.

The square root of 11985938 is about 3462.0713453076. The cubic root of 11985938 is about 228.8533859360.

The spelling of 11985938 in words is "eleven million, nine hundred eighty-five thousand, nine hundred thirty-eight".