11955965 has 16 divisors (see below), whose sum is σ = 16547328. Its totient is φ = 8123136.

The previous prime is 11955961. The next prime is 11955973. The reversal of 11955965 is 56955911.

It is not a de Polignac number, because 11955965 - 2² = 11955961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11955961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2444 + ... + 5466.

It is an arithmetic number, because the mean of its divisors is an integer number (1034208).

Almost surely, 2^11955965 is an apocalyptic number.

It is an amenable number.

11955965 is a deficient number, since it is larger than the sum of its proper divisors (4591363).

11955965 is a wasteful number, since it uses less digits than its factorization.

11955965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148.

The product of its digits is 60750, while the sum is 41.

The square root of 11955965 is about 3457.7398687582. The cubic root of 11955965 is about 228.6624636449.

The spelling of 11955965 in words is "eleven million, nine hundred fifty-five thousand, nine hundred sixty-five".