12147849 has 24 divisors (see below), whose sum is σ = 20547072. Its totient is φ = 6770880.

The previous prime is 12147847. The next prime is 12147853. The reversal of 12147849 is 94874121.

12147849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12147849 - 2¹ = 12147847 is a prime.

It is a super-3 number, since 3×12147849³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12147847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 232 + ... + 4934.

It is an arithmetic number, because the mean of its divisors is an integer number (856128).

Almost surely, 2^12147849 is an apocalyptic number.

It is an amenable number.

12147849 is a deficient number, since it is larger than the sum of its proper divisors (8399223).

12147849 is a wasteful number, since it uses less digits than its factorization.

12147849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4757 (or 4754 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 12147849 is about 3485.3764502561. The cubic root of 12147849 is about 229.8792624023.

It can be divided in two parts, 12147 and 849, that added together give a square (12996 = 114²).

The spelling of 12147849 in words is "twelve million, one hundred forty-seven thousand, eight hundred forty-nine".