11983621 has 12 divisors (see below), whose sum is σ = 13544928. Its totient is φ = 10577424.

The previous prime is 11983619. The next prime is 11983663. The reversal of 11983621 is 12638911.

It is not a de Polignac number, because 11983621 - 2¹ = 11983619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11983021) 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 11 ways as a sum of consecutive naturals, for example, 2346 + ... + 5428.

It is an arithmetic number, because the mean of its divisors is an integer number (1128744).

Almost surely, 2^11983621 is an apocalyptic number.

It is an amenable number.

11983621 is a deficient number, since it is larger than the sum of its proper divisors (1561307).

11983621 is a wasteful number, since it uses less digits than its factorization.

11983621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132 (or 3119 counting only the distinct ones).

The product of its digits is 2592, while the sum is 31.

The square root of 11983621 is about 3461.7367028704. The cubic root of 11983621 is about 228.8386384470.

The spelling of 11983621 in words is "eleven million, nine hundred eighty-three thousand, six hundred twenty-one".