12909149 has 8 divisors (see below), whose sum is σ = 14281920. Its totient is φ = 11569600.

The previous prime is 12909139. The next prime is 12909163. The reversal of 12909149 is 94190921.

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 12909149 - 2²⁰ = 11860573 is a prime.

It is a super-2 number, since 2×12909149² = 333292255808402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12909109) 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, 7484 + ... + 9045.

It is an arithmetic number, because the mean of its divisors is an integer number (1785240).

Almost surely, 2^12909149 is an apocalyptic number.

It is an amenable number.

12909149 is a deficient number, since it is larger than the sum of its proper divisors (1372771).

12909149 is a wasteful number, since it uses less digits than its factorization.

12909149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16611.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 12909149 is about 3592.9304195879. The cubic root of 12909149 is about 234.5844413825.

The spelling of 12909149 in words is "twelve million, nine hundred nine thousand, one hundred forty-nine".