11973983 has 6 divisors (see below), whose sum is σ = 13928976. Its totient is φ = 10263372.

The previous prime is 11973979. The next prime is 11973989. The reversal of 11973983 is 38937911.

It is not a de Polignac number, because 11973983 - 2² = 11973979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11973983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11973989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122135 + ... + 122232.

It is an arithmetic number, because the mean of its divisors is an integer number (2321496).

Almost surely, 2^11973983 is an apocalyptic number.

11973983 is a deficient number, since it is larger than the sum of its proper divisors (1954993).

11973983 is an equidigital number, since it uses as much as digits as its factorization.

11973983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244381 (or 244374 counting only the distinct ones).

The product of its digits is 40824, while the sum is 41.

The square root of 11973983 is about 3460.3443470268. The cubic root of 11973983 is about 228.7772730678. Note that the first 3 decimals are identical.

The spelling of 11973983 in words is "eleven million, nine hundred seventy-three thousand, nine hundred eighty-three".