12349749 has 24 divisors (see below), whose sum is σ = 17649408. Its totient is φ = 7672320.

The previous prime is 12349739. The next prime is 12349759. The reversal of 12349749 is 94794321.

It is an interprime number because it is at equal distance from previous prime (12349739) and next prime (12349759).

It is not a de Polignac number, because 12349749 - 2⁹ = 12349237 is a prime.

Its product of digits (54432) is a multiple of the sum of its prime divisors (168).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12349709) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 127269 + ... + 127365.

It is an arithmetic number, because the mean of its divisors is an integer number (735392).

Almost surely, 2^12349749 is an apocalyptic number.

It is an amenable number.

12349749 is a deficient number, since it is larger than the sum of its proper divisors (5299659).

12349749 is an equidigital number, since it uses as much as digits as its factorization.

12349749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 168 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 12349749 is about 3514.2209663025. The cubic root of 12349749 is about 231.1458197395.

The spelling of 12349749 in words is "twelve million, three hundred forty-nine thousand, seven hundred forty-nine".