11978929 has 8 divisors (see below), whose sum is σ = 12805632. Its totient is φ = 11177760.

The previous prime is 11978921. The next prime is 11978959. The reversal of 11978929 is 92987911.

It is a happy number.

11978929 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 a cyclic number.

It is not a de Polignac number, because 11978929 - 2³ = 11978921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11978921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5409 + ... + 7294.

It is an arithmetic number, because the mean of its divisors is an integer number (1600704).

Almost surely, 2^11978929 is an apocalyptic number.

It is an amenable number.

11978929 is a deficient number, since it is larger than the sum of its proper divisors (826703).

11978929 is a wasteful number, since it uses less digits than its factorization.

11978929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12767.

The product of its digits is 81648, while the sum is 46.

The square root of 11978929 is about 3461.0589420003. The cubic root of 11978929 is about 228.8087684811.

The spelling of 11978929 in words is "eleven million, nine hundred seventy-eight thousand, nine hundred twenty-nine".