11139808 has 24 divisors (see below), whose sum is σ = 22007160. Its totient is φ = 5550720.

The previous prime is 11139787. The next prime is 11139809. The reversal of 11139808 is 80893111.

It is a self number, because there is not a number n which added to its sum of digits gives 11139808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11139809) 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 3 ways as a sum of consecutive naturals, for example, 15358 + ... + 16066.

It is an arithmetic number, because the mean of its divisors is an integer number (916965).

Almost surely, 2^11139808 is an apocalyptic number.

It is an amenable number.

11139808 is a deficient number, since it is larger than the sum of its proper divisors (10867352).

11139808 is an equidigital number, since it uses as much as digits as its factorization.

11139808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210 (or 1202 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 11139808 is about 3337.6350908989. The cubic root of 11139808 is about 223.3362579751.

The spelling of 11139808 in words is "eleven million, one hundred thirty-nine thousand, eight hundred eight".