11955579 has 16 divisors (see below), whose sum is σ = 16913280. Its totient is φ = 7490880.

The previous prime is 11955571. The next prime is 11955599. The reversal of 11955579 is 97555911.

It is not a de Polignac number, because 11955579 - 2³ = 11955571 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11955579.

It is not an unprimeable number, because it can be changed into a prime (11955571) 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, 7044 + ... + 8574.

It is an arithmetic number, because the mean of its divisors is an integer number (1057080).

Almost surely, 2^11955579 is an apocalyptic number.

11955579 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11955579 is a deficient number, since it is larger than the sum of its proper divisors (4957701).

11955579 is a wasteful number, since it uses less digits than its factorization.

11955579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690.

The product of its digits is 70875, while the sum is 42.

The square root of 11955579 is about 3457.6840515004. The cubic root of 11955579 is about 228.6600028185.

The spelling of 11955579 in words is "eleven million, nine hundred fifty-five thousand, five hundred seventy-nine".