12148989 has 8 divisors (see below), whose sum is σ = 16215552. Its totient is φ = 8090880.

The previous prime is 12148973. The next prime is 12149003. The reversal of 12148989 is 98984121.

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

It is not a de Polignac number, because 12148989 - 2⁴ = 12148973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12148989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12148789) 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, 3037 + ... + 5789.

It is an arithmetic number, because the mean of its divisors is an integer number (2026944).

Almost surely, 2^12148989 is an apocalyptic number.

It is an amenable number.

12148989 is a deficient number, since it is larger than the sum of its proper divisors (4066563).

12148989 is a wasteful number, since it uses less digits than its factorization.

12148989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4227.

The product of its digits is 41472, while the sum is 42.

The square root of 12148989 is about 3485.5399868600. The cubic root of 12148989 is about 229.8864530899.

The spelling of 12148989 in words is "twelve million, one hundred forty-eight thousand, nine hundred eighty-nine".