11939138 has 4 divisors (see below), whose sum is σ = 17908710. Its totient is φ = 5969568.

The previous prime is 11939113. The next prime is 11939177. The reversal of 11939138 is 83193911.

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., 11042329 + 896809 = 3323^2 + 947^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11939098 and 11939107.

It is an unprimeable number.

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, 2984783 + ... + 2984786.

Almost surely, 2^11939138 is an apocalyptic number.

11939138 is a deficient number, since it is larger than the sum of its proper divisors (5969572).

11939138 is an equidigital number, since it uses as much as digits as its factorization.

11939138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5969571.

The product of its digits is 5832, while the sum is 35.

The square root of 11939138 is about 3455.3057751811. The cubic root of 11939138 is about 228.5551389805. Note that the first 3 decimals are identical.

The spelling of 11939138 in words is "eleven million, nine hundred thirty-nine thousand, one hundred thirty-eight".