11978679 has 16 divisors (see below), whose sum is σ = 16615424. Its totient is φ = 7668000.

The previous prime is 11978671. The next prime is 11978717. The reversal of 11978679 is 97687911.

It is a happy number.

It is not a de Polignac number, because 11978679 - 2³ = 11978671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11978671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13617 + ... + 14469.

It is an arithmetic number, because the mean of its divisors is an integer number (1038464).

Almost surely, 2^11978679 is an apocalyptic number.

11978679 is a deficient number, since it is larger than the sum of its proper divisors (4636745).

11978679 is a wasteful number, since it uses less digits than its factorization.

11978679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038.

The product of its digits is 190512, while the sum is 48.

The square root of 11978679 is about 3461.0228256976. The cubic root of 11978679 is about 228.8071767253.

The spelling of 11978679 in words is "eleven million, nine hundred seventy-eight thousand, six hundred seventy-nine".