11979215 has 8 divisors (see below), whose sum is σ = 15131760. Its totient is φ = 9078912.

The previous prime is 11979173. The next prime is 11979239. The reversal of 11979215 is 51297911.

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 11979215 - 2⁶ = 11979151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62954 + ... + 63143.

It is an arithmetic number, because the mean of its divisors is an integer number (1891470).

Almost surely, 2^11979215 is an apocalyptic number.

11979215 is a deficient number, since it is larger than the sum of its proper divisors (3152545).

11979215 is a wasteful number, since it uses less digits than its factorization.

11979215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126121.

The product of its digits is 5670, while the sum is 35.

The square root of 11979215 is about 3461.1002585883. The cubic root of 11979215 is about 228.8105894226.

The spelling of 11979215 in words is "eleven million, nine hundred seventy-nine thousand, two hundred fifteen".