11385639 has 12 divisors (see below), whose sum is σ = 16521336. Its totient is φ = 7555632.

The previous prime is 11385623. The next prime is 11385739. The reversal of 11385639 is 93658311.

It is a happy number.

11385639 is a `hidden beast` number, since 1 + 13 + 8 + 5 + 639 = 666.

It is not a de Polignac number, because 11385639 - 2⁴ = 11385623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11385739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 744 + ... + 4829.

It is an arithmetic number, because the mean of its divisors is an integer number (1376778).

Almost surely, 2^11385639 is an apocalyptic number.

11385639 is a deficient number, since it is larger than the sum of its proper divisors (5135697).

11385639 is a wasteful number, since it uses less digits than its factorization.

11385639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5806 (or 5803 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 11385639 is about 3374.2612524818. The cubic root of 11385639 is about 224.9671655791.

The spelling of 11385639 in words is "eleven million, three hundred eighty-five thousand, six hundred thirty-nine".