12281949 has 12 divisors (see below), whose sum is σ = 18398016. Its totient is φ = 8187804.

The previous prime is 12281947. The next prime is 12281963. The reversal of 12281949 is 94918221.

It is not a de Polignac number, because 12281949 - 2¹ = 12281947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12281947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25029 + ... + 25514.

It is an arithmetic number, because the mean of its divisors is an integer number (1533168).

Almost surely, 2^12281949 is an apocalyptic number.

It is an amenable number.

12281949 is a deficient number, since it is larger than the sum of its proper divisors (6116067).

12281949 is an frugal number, since it uses more digits than its factorization.

12281949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50558 (or 50546 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 12281949 is about 3504.5611708173. The cubic root of 12281949 is about 230.7220471996.

It can be divided in two parts, 12 and 281949, that added together give a square (281961 = 531²).

The spelling of 12281949 in words is "twelve million, two hundred eighty-one thousand, nine hundred forty-nine".