12343749 has 16 divisors (see below), whose sum is σ = 18900480. Its totient is φ = 7086960.

The previous prime is 12343703. The next prime is 12343769. The reversal of 12343749 is 94734321.

It is not a de Polignac number, because 12343749 - 2⁷ = 12343621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a plaindrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12343769) 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 15 ways as a sum of consecutive naturals, for example, 9217 + ... + 10470.

It is an arithmetic number, because the mean of its divisors is an integer number (1181280).

Almost surely, 2^12343749 is an apocalyptic number.

12343749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12343749 is a deficient number, since it is larger than the sum of its proper divisors (6556731).

12343749 is a wasteful number, since it uses less digits than its factorization.

12343749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19720.

The product of its digits is 18144, while the sum is 33.

The square root of 12343749 is about 3513.3671883252. The cubic root of 12343749 is about 231.1083803935.

The spelling of 12343749 in words is "twelve million, three hundred forty-three thousand, seven hundred forty-nine".