11977779 has 32 divisors (see below), whose sum is σ = 18653184. Its totient is φ = 6763680.

The previous prime is 11977759. The next prime is 11977787. The reversal of 11977779 is 97777911.

11977779 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11977779 - 2⁵ = 11977747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11977739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32454 + ... + 32820.

It is an arithmetic number, because the mean of its divisors is an integer number (582912).

Almost surely, 2^11977779 is an apocalyptic number.

11977779 is a deficient number, since it is larger than the sum of its proper divisors (6675405).

11977779 is a wasteful number, since it uses less digits than its factorization.

11977779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447.

The product of its digits is 194481, while the sum is 48.

The square root of 11977779 is about 3460.8928038875. The cubic root of 11977779 is about 228.8014462209.

The spelling of 11977779 in words is "eleven million, nine hundred seventy-seven thousand, seven hundred seventy-nine".