11387867 has 2 divisors, whose sum is σ = 11387868. Its totient is φ = 11387866.

The previous prime is 11387863. The next prime is 11387869. The reversal of 11387867 is 76878311.

It is a strong prime.

It is an emirp because it is prime and its reverse (76878311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11387867 - 2² = 11387863 is a prime.

Together with 11387869, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11387861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5693933 + 5693934.

It is an arithmetic number, because the mean of its divisors is an integer number (5693934).

Almost surely, 2^11387867 is an apocalyptic number.

11387867 is a deficient number, since it is larger than the sum of its proper divisors (1).

11387867 is an equidigital number, since it uses as much as digits as its factorization.

11387867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 41.

The square root of 11387867 is about 3374.5913826714. The cubic root of 11387867 is about 224.9818388634.

The spelling of 11387867 in words is "eleven million, three hundred eighty-seven thousand, eight hundred sixty-seven".