11979005 has 8 divisors (see below), whose sum is σ = 14393400. Its totient is φ = 9570816.

The previous prime is 11978959. The next prime is 11979029. The reversal of 11979005 is 50097911.

It can be written as a sum of positive squares in 4 ways, for example, as 2627641 + 9351364 = 1621^2 + 3058^2 .

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 11979005 - 2¹² = 11974909 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, 6641 + ... + 8249.

It is an arithmetic number, because the mean of its divisors is an integer number (1799175).

Almost surely, 2^11979005 is an apocalyptic number.

It is an amenable number.

11979005 is a deficient number, since it is larger than the sum of its proper divisors (2414395).

11979005 is a wasteful number, since it uses less digits than its factorization.

11979005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103.

The product of its (nonzero) digits is 2835, while the sum is 32.

The square root of 11979005 is about 3461.0699212816. The cubic root of 11979005 is about 228.8092523705.

The spelling of 11979005 in words is "eleven million, nine hundred seventy-nine thousand, five".