11856943 has 8 divisors (see below), whose sum is σ = 13571712. Its totient is φ = 10147416.

The previous prime is 11856919. The next prime is 11856947. The reversal of 11856943 is 34965811.

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 11856943 - 2¹³ = 11848751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11856947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7596 + ... + 9022.

It is an arithmetic number, because the mean of its divisors is an integer number (1696464).

Almost surely, 2^11856943 is an apocalyptic number.

11856943 is a deficient number, since it is larger than the sum of its proper divisors (1714769).

11856943 is a wasteful number, since it uses less digits than its factorization.

11856943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621.

The product of its digits is 25920, while the sum is 37.

The square root of 11856943 is about 3443.3912063546. The cubic root of 11856943 is about 228.0294347450.

It can be divided in two parts, 1185 and 6943, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 11856943 in words is "eleven million, eight hundred fifty-six thousand, nine hundred forty-three".