11956387 has 2 divisors, whose sum is σ = 11956388. Its totient is φ = 11956386.

The previous prime is 11956369. The next prime is 11956393. The reversal of 11956387 is 78365911.

11956387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11956387 - 2¹¹ = 11954339 is a prime.

It is not a weakly prime, because it can be changed into another prime (11956367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5978193 + 5978194.

It is an arithmetic number, because the mean of its divisors is an integer number (5978194).

Almost surely, 2^11956387 is an apocalyptic number.

11956387 is a deficient number, since it is larger than the sum of its proper divisors (1).

11956387 is an equidigital number, since it uses as much as digits as its factorization.

11956387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 11956387 is about 3457.8008907397. The cubic root of 11956387 is about 228.6651539177.

The spelling of 11956387 in words is "eleven million, nine hundred fifty-six thousand, three hundred eighty-seven".