12909198 has 8 divisors (see below), whose sum is σ = 25818408. Its totient is φ = 4303064.

The previous prime is 12909179. The next prime is 12909217. The reversal of 12909198 is 89190921.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12909179) and next prime (12909217).

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

12909198 is an admirable number.

It is a zygodrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1075761 + ... + 1075772.

It is an arithmetic number, because the mean of its divisors is an integer number (3227301).

Almost surely, 2^12909198 is an apocalyptic number.

12909198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12909198 is a wasteful number, since it uses less digits than its factorization.

12909198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151538.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 12909198 is about 3592.9372385278. The cubic root of 12909198 is about 234.5847381907.

The spelling of 12909198 in words is "twelve million, nine hundred nine thousand, one hundred ninety-eight".