12404729 has 2 divisors, whose sum is σ = 12404730. Its totient is φ = 12404728.

The previous prime is 12404723. The next prime is 12404761. The reversal of 12404729 is 92740421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10368400 + 2036329 = 3220^2 + 1427^2 .

It is an emirp because it is prime and its reverse (92740421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12404729 is a prime.

It is not a weakly prime, because it can be changed into another prime (12404723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6202364 + 6202365.

It is an arithmetic number, because the mean of its divisors is an integer number (6202365).

Almost surely, 2^12404729 is an apocalyptic number.

It is an amenable number.

12404729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12404729 is an equidigital number, since it uses as much as digits as its factorization.

12404729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 12404729 is about 3522.0347812025. The cubic root of 12404729 is about 231.4883256152.

The spelling of 12404729 in words is "twelve million, four hundred four thousand, seven hundred twenty-nine".