11811994 has 8 divisors (see below), whose sum is σ = 17775540. Its totient is φ = 5886816.

The previous prime is 11811983. The next prime is 11812007. The reversal of 11811994 is 49911811.

11811994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11799225 + 12769 = 3435^2 + 113^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8809 + ... + 10060.

Almost surely, 2^11811994 is an apocalyptic number.

11811994 is a deficient number, since it is larger than the sum of its proper divisors (5963546).

11811994 is a wasteful number, since it uses less digits than its factorization.

11811994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19184.

The product of its digits is 2592, while the sum is 34.

The square root of 11811994 is about 3436.8581582602. The cubic root of 11811994 is about 227.7409209627.

The spelling of 11811994 in words is "eleven million, eight hundred eleven thousand, nine hundred ninety-four".