12158949 has 8 divisors (see below), whose sum is σ = 17685792. Its totient is φ = 7369040.

The previous prime is 12158921. The next prime is 12158987. The reversal of 12158949 is 94985121.

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 12158949 - 2⁸ = 12158693 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12158989) 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, 184194 + ... + 184259.

It is an arithmetic number, because the mean of its divisors is an integer number (2210724).

Almost surely, 2^12158949 is an apocalyptic number.

It is an amenable number.

12158949 is a deficient number, since it is larger than the sum of its proper divisors (5526843).

12158949 is a wasteful number, since it uses less digits than its factorization.

12158949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368467.

The product of its digits is 25920, while the sum is 39.

The square root of 12158949 is about 3486.9684541160. The cubic root of 12158949 is about 229.9492578673.

The spelling of 12158949 in words is "twelve million, one hundred fifty-eight thousand, nine hundred forty-nine".