11983957 has 2 divisors, whose sum is σ = 11983958. Its totient is φ = 11983956.

The previous prime is 11983901. The next prime is 11983969. The reversal of 11983957 is 75938911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6195121 + 5788836 = 2489^2 + 2406^2 .

It is a cyclic number.

It is not a de Polignac number, because 11983957 - 2¹¹ = 11981909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11983987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5991978 + 5991979.

It is an arithmetic number, because the mean of its divisors is an integer number (5991979).

Almost surely, 2^11983957 is an apocalyptic number.

It is an amenable number.

11983957 is a deficient number, since it is larger than the sum of its proper divisors (1).

11983957 is an equidigital number, since it uses as much as digits as its factorization.

11983957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 43.

The square root of 11983957 is about 3461.7852330842. The cubic root of 11983957 is about 228.8407771736.

The spelling of 11983957 in words is "eleven million, nine hundred eighty-three thousand, nine hundred fifty-seven".