12239915 has 8 divisors (see below), whose sum is σ = 15552000. Its totient is φ = 9215872.

The previous prime is 12239911. The next prime is 12239939. The reversal of 12239915 is 51993221.

12239915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12239915 - 2² = 12239911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12239911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71915 + ... + 72084.

It is an arithmetic number, because the mean of its divisors is an integer number (1944000).

Almost surely, 2^12239915 is an apocalyptic number.

12239915 is a deficient number, since it is larger than the sum of its proper divisors (3312085).

12239915 is a wasteful number, since it uses less digits than its factorization.

12239915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144021.

The product of its digits is 4860, while the sum is 32.

The square root of 12239915 is about 3498.5589890696. The cubic root of 12239915 is about 230.4585370309.

The spelling of 12239915 in words is "twelve million, two hundred thirty-nine thousand, nine hundred fifteen".