12139888 has 10 divisors (see below), whose sum is σ = 23521064. Its totient is φ = 6069936.

The previous prime is 12139873. The next prime is 12139891. The reversal of 12139888 is 88893121.

It is a self number, because there is not a number n which added to its sum of digits gives 12139888.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 379356 + ... + 379387.

Almost surely, 2^12139888 is an apocalyptic number.

It is an amenable number.

12139888 is a deficient number, since it is larger than the sum of its proper divisors (11381176).

12139888 is an equidigital number, since it uses as much as digits as its factorization.

12139888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758751 (or 758745 counting only the distinct ones).

The product of its digits is 27648, while the sum is 40.

The square root of 12139888 is about 3484.2342056756. The cubic root of 12139888 is about 229.8290348893.

The spelling of 12139888 in words is "twelve million, one hundred thirty-nine thousand, eight hundred eighty-eight".