12213949 has 8 divisors (see below), whose sum is σ = 13462848. Its totient is φ = 10988160.

The previous prime is 12213947. The next prime is 12213991. The reversal of 12213949 is 94931221.

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

It is not a de Polignac number, because 12213949 - 2¹ = 12213947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12213949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213947) 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, 4657 + ... + 6790.

It is an arithmetic number, because the mean of its divisors is an integer number (1682856).

Almost surely, 2^12213949 is an apocalyptic number.

It is an amenable number.

12213949 is a deficient number, since it is larger than the sum of its proper divisors (1248899).

12213949 is a wasteful number, since it uses less digits than its factorization.

12213949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11555.

The product of its digits is 3888, while the sum is 31.

The square root of 12213949 is about 3494.8460624182. The cubic root of 12213949 is about 230.2954552079.

The spelling of 12213949 in words is "twelve million, two hundred thirteen thousand, nine hundred forty-nine".