11978366 has 4 divisors (see below), whose sum is σ = 17967552. Its totient is φ = 5989182.

The previous prime is 11978359. The next prime is 11978389. The reversal of 11978366 is 66387911.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2994590 + ... + 2994593.

It is an arithmetic number, because the mean of its divisors is an integer number (4491888).

Almost surely, 2^11978366 is an apocalyptic number.

11978366 is a deficient number, since it is larger than the sum of its proper divisors (5989186).

11978366 is an equidigital number, since it uses as much as digits as its factorization.

11978366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5989185.

The product of its digits is 54432, while the sum is 41.

The square root of 11978366 is about 3460.9776075554. The cubic root of 11978366 is about 228.8051838158.

The spelling of 11978366 in words is "eleven million, nine hundred seventy-eight thousand, three hundred sixty-six".