11917994 has 8 divisors (see below), whose sum is σ = 19502208. Its totient is φ = 5417260.

The previous prime is 11917993. The next prime is 11918051. The reversal of 11917994 is 49971911.

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

It is not an unprimeable number, because it can be changed into a prime (11917993) 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, 270842 + ... + 270885.

It is an arithmetic number, because the mean of its divisors is an integer number (2437776).

Almost surely, 2^11917994 is an apocalyptic number.

11917994 is a deficient number, since it is larger than the sum of its proper divisors (7584214).

11917994 is a wasteful number, since it uses less digits than its factorization.

11917994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541740.

The product of its digits is 20412, while the sum is 41.

The square root of 11917994 is about 3452.2447769531. The cubic root of 11917994 is about 228.4201368983.

The spelling of 11917994 in words is "eleven million, nine hundred seventeen thousand, nine hundred ninety-four".