12159998 has 32 divisors (see below), whose sum is σ = 20321280. Its totient is φ = 5431680.

The previous prime is 12159991. The next prime is 12160003. The reversal of 12159998 is 89995121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12159991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87413 + ... + 87551.

It is an arithmetic number, because the mean of its divisors is an integer number (635040).

Almost surely, 2^12159998 is an apocalyptic number.

12159998 is a deficient number, since it is larger than the sum of its proper divisors (8161282).

12159998 is a wasteful number, since it uses less digits than its factorization.

12159998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272.

The product of its digits is 58320, while the sum is 44.

The square root of 12159998 is about 3487.1188680629. The cubic root of 12159998 is about 229.9558705506.

The spelling of 12159998 in words is "twelve million, one hundred fifty-nine thousand, nine hundred ninety-eight".