11979385 has 16 divisors (see below), whose sum is σ = 15785280. Its totient is φ = 8655040.

The previous prime is 11979347. The next prime is 11979391. The reversal of 11979385 is 58397911.

11979385 = 1090² + 1091² + ... + 1099².

It is not a de Polignac number, because 11979385 - 2¹¹ = 11977337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8886 + ... + 10144.

It is an arithmetic number, because the mean of its divisors is an integer number (986580).

Almost surely, 2^11979385 is an apocalyptic number.

It is an amenable number.

11979385 is a deficient number, since it is larger than the sum of its proper divisors (3805895).

11979385 is a wasteful number, since it uses less digits than its factorization.

11979385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448.

The product of its digits is 68040, while the sum is 43.

The square root of 11979385 is about 3461.1248171657. The cubic root of 11979385 is about 228.8116717867.

The spelling of 11979385 in words is "eleven million, nine hundred seventy-nine thousand, three hundred eighty-five".