11993956 has 12 divisors (see below), whose sum is σ = 22604092. Its totient is φ = 5535648.

The previous prime is 11993911. The next prime is 11993963. The reversal of 11993956 is 65939911.

It can be written as a sum of positive squares in 2 ways, for example, as 3385600 + 8608356 = 1840^2 + 2934^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 115275 + ... + 115378.

Almost surely, 2^11993956 is an apocalyptic number.

It is an amenable number.

11993956 is a deficient number, since it is larger than the sum of its proper divisors (10610136).

11993956 is a wasteful number, since it uses less digits than its factorization.

11993956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230670 (or 230668 counting only the distinct ones).

The product of its digits is 65610, while the sum is 43.

The square root of 11993956 is about 3463.2291290066. The cubic root of 11993956 is about 228.9044050953.

The spelling of 11993956 in words is "eleven million, nine hundred ninety-three thousand, nine hundred fifty-six".