11939906 has 8 divisors (see below), whose sum is σ = 19538064. Its totient is φ = 5427220.

The previous prime is 11939903. The next prime is 11939911. The reversal of 11939906 is 60993911.

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

It is a super-2 number, since 2×11939906² = 285122710577672, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11939906.

It is not an unprimeable number, because it can be changed into a prime (11939903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271340 + ... + 271383.

It is an arithmetic number, because the mean of its divisors is an integer number (2442258).

Almost surely, 2^11939906 is an apocalyptic number.

11939906 is a deficient number, since it is larger than the sum of its proper divisors (7598158).

11939906 is a wasteful number, since it uses less digits than its factorization.

11939906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542736.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 11939906 is about 3455.4169068290. The cubic root of 11939906 is about 228.5600395739.

The spelling of 11939906 in words is "eleven million, nine hundred thirty-nine thousand, nine hundred six".