12139698 has 8 divisors (see below), whose sum is σ = 24279408. Its totient is φ = 4046564.

The previous prime is 12139697. The next prime is 12139709. The reversal of 12139698 is 89693121.

It is a sphenic number, since it is the product of 3 distinct primes.

12139698 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (12139691) 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, 1011636 + ... + 1011647.

It is an arithmetic number, because the mean of its divisors is an integer number (3034926).

Almost surely, 2^12139698 is an apocalyptic number.

12139698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12139698 is a wasteful number, since it uses less digits than its factorization.

12139698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023288.

The product of its digits is 23328, while the sum is 39.

The square root of 12139698 is about 3484.2069398932. The cubic root of 12139698 is about 229.8278358738.

The spelling of 12139698 in words is "twelve million, one hundred thirty-nine thousand, six hundred ninety-eight".