12198985 has 8 divisors (see below), whose sum is σ = 14754816. Its totient is φ = 9681840.

The previous prime is 12198961. The next prime is 12199001. The reversal of 12198985 is 58989121.

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

It is a de Polignac number, because none of the positive numbers 2^k-12198985 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8971 + ... + 10240.

It is an arithmetic number, because the mean of its divisors is an integer number (1844352).

Almost surely, 2^12198985 is an apocalyptic number.

It is an amenable number.

12198985 is a deficient number, since it is larger than the sum of its proper divisors (2555831).

12198985 is a wasteful number, since it uses less digits than its factorization.

12198985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19343.

The product of its digits is 51840, while the sum is 43.

The square root of 12198985 is about 3492.7045394651. The cubic root of 12198985 is about 230.2013674425.

The spelling of 12198985 in words is "twelve million, one hundred ninety-eight thousand, nine hundred eighty-five".