11955973 has 2 divisors, whose sum is σ = 11955974. Its totient is φ = 11955972.

The previous prime is 11955961. The next prime is 11955989. The reversal of 11955973 is 37955911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10870209 + 1085764 = 3297^2 + 1042^2 .

It is a cyclic number.

It is not a de Polignac number, because 11955973 - 2⁵ = 11955941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11955943) 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 as a sum of consecutive naturals, namely, 5977986 + 5977987.

It is an arithmetic number, because the mean of its divisors is an integer number (5977987).

Almost surely, 2^11955973 is an apocalyptic number.

It is an amenable number.

11955973 is a deficient number, since it is larger than the sum of its proper divisors (1).

11955973 is an equidigital number, since it uses as much as digits as its factorization.

11955973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42525, while the sum is 40.

The square root of 11955973 is about 3457.7410255830. The cubic root of 11955973 is about 228.6625146459.

The spelling of 11955973 in words is "eleven million, nine hundred fifty-five thousand, nine hundred seventy-three".