11973959 has 2 divisors, whose sum is σ = 11973960. Its totient is φ = 11973958.

The previous prime is 11973943. The next prime is 11973979. The reversal of 11973959 is 95937911.

It is a weak prime.

It is an emirp because it is prime and its reverse (95937911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11973959 - 2⁴ = 11973943 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11973979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5986979 + 5986980.

It is an arithmetic number, because the mean of its divisors is an integer number (5986980).

Almost surely, 2^11973959 is an apocalyptic number.

11973959 is a deficient number, since it is larger than the sum of its proper divisors (1).

11973959 is an equidigital number, since it uses as much as digits as its factorization.

11973959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76545, while the sum is 44.

The square root of 11973959 is about 3460.3408791621. The cubic root of 11973959 is about 228.7771202181. Note that the first 3 decimals are identical.

The spelling of 11973959 in words is "eleven million, nine hundred seventy-three thousand, nine hundred fifty-nine".