11978906 has 8 divisors (see below), whose sum is σ = 18749664. Its totient is φ = 5729020.

The previous prime is 11978893. The next prime is 11978917. The reversal of 11978906 is 60987911.

It is a happy number.

11978906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 130160 + ... + 130251.

It is an arithmetic number, because the mean of its divisors is an integer number (2343708).

Almost surely, 2^11978906 is an apocalyptic number.

11978906 is a deficient number, since it is larger than the sum of its proper divisors (6770758).

11978906 is a wasteful number, since it uses less digits than its factorization.

11978906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260436.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 11978906 is about 3461.0556193162. The cubic root of 11978906 is about 228.8086220405.

The spelling of 11978906 in words is "eleven million, nine hundred seventy-eight thousand, nine hundred six".