11387939 has 2 divisors, whose sum is σ = 11387940. Its totient is φ = 11387938.

The previous prime is 11387933. The next prime is 11387947. The reversal of 11387939 is 93978311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11387939 - 2¹² = 11383843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11387896 and 11387905.

It is not a weakly prime, because it can be changed into another prime (11387933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5693969 + 5693970.

It is an arithmetic number, because the mean of its divisors is an integer number (5693970).

Almost surely, 2^11387939 is an apocalyptic number.

11387939 is a deficient number, since it is larger than the sum of its proper divisors (1).

11387939 is an equidigital number, since it uses as much as digits as its factorization.

11387939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 41.

The square root of 11387939 is about 3374.6020506128. The cubic root of 11387939 is about 224.9823130130.

The spelling of 11387939 in words is "eleven million, three hundred eighty-seven thousand, nine hundred thirty-nine".