11984641 has 4 divisors (see below), whose sum is σ = 12108292. Its totient is φ = 11860992.

The previous prime is 11984639. The next prime is 11984653. The reversal of 11984641 is 14648911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14648911 = 659 ⋅22229.

It can be written as a sum of positive squares in 2 ways, for example, as 3690241 + 8294400 = 1921^2 + 2880^2 .

It is a cyclic number.

It is not a de Polignac number, because 11984641 - 2¹ = 11984639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11984597 and 11984606.

It is not an unprimeable number, because it can be changed into a prime (11984741) 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 3 ways as a sum of consecutive naturals, for example, 61680 + ... + 61873.

It is an arithmetic number, because the mean of its divisors is an integer number (3027073).

Almost surely, 2^11984641 is an apocalyptic number.

It is an amenable number.

11984641 is a deficient number, since it is larger than the sum of its proper divisors (123651).

11984641 is an equidigital number, since it uses as much as digits as its factorization.

11984641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123650.

The product of its digits is 6912, while the sum is 34.

The square root of 11984641 is about 3461.8840246317. The cubic root of 11984641 is about 228.8451308862.

The spelling of 11984641 in words is "eleven million, nine hundred eighty-four thousand, six hundred forty-one".