11387439 has 16 divisors (see below), whose sum is σ = 19280640. Its totient is φ = 6507000.

The previous prime is 11387429. The next prime is 11387449. The reversal of 11387439 is 93478311.

It is a happy number.

11387439 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11387429) and next prime (11387449).

It is not a de Polignac number, because 11387439 - 2⁴ = 11387423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11387429) 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 in 15 ways as a sum of consecutive naturals, for example, 29937 + ... + 30314.

It is an arithmetic number, because the mean of its divisors is an integer number (1205040).

Almost surely, 2^11387439 is an apocalyptic number.

11387439 is a deficient number, since it is larger than the sum of its proper divisors (7893201).

11387439 is an equidigital number, since it uses as much as digits as its factorization.

11387439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60267 (or 60261 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 11387439 is about 3374.5279669903. The cubic root of 11387439 is about 224.9790202661.

The spelling of 11387439 in words is "eleven million, three hundred eighty-seven thousand, four hundred thirty-nine".