11956945 has 32 divisors (see below), whose sum is σ = 19272960. Its totient is φ = 6877440.

The previous prime is 11956943. The next prime is 11956951. The reversal of 11956945 is 54965911.

It is not a de Polignac number, because 11956945 - 2¹ = 11956943 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 11956898 and 11956907.

It is not an unprimeable number, because it can be changed into a prime (11956943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3811 + ... + 6199.

It is an arithmetic number, because the mean of its divisors is an integer number (602280).

Almost surely, 2^11956945 is an apocalyptic number.

It is an amenable number.

11956945 is a deficient number, since it is larger than the sum of its proper divisors (7316015).

11956945 is a wasteful number, since it uses less digits than its factorization.

11956945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2425.

The product of its digits is 48600, while the sum is 40.

The square root of 11956945 is about 3457.8815769196. The cubic root of 11956945 is about 228.6687111008.

The spelling of 11956945 in words is "eleven million, nine hundred fifty-six thousand, nine hundred forty-five".