12407729 has 2 divisors, whose sum is σ = 12407730. Its totient is φ = 12407728.

The previous prime is 12407713. The next prime is 12407761. The reversal of 12407729 is 92770421.

It is an a-pointer prime, because the next prime (12407761) can be obtained adding 12407729 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 1385329 = 3320^2 + 1177^2 .

It is an emirp because it is prime and its reverse (92770421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12407729 - 2⁴ = 12407713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12407695 and 12407704.

It is not a weakly prime, because it can be changed into another prime (12407429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6203864 + 6203865.

It is an arithmetic number, because the mean of its divisors is an integer number (6203865).

Almost surely, 2^12407729 is an apocalyptic number.

It is an amenable number.

12407729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12407729 is an equidigital number, since it uses as much as digits as its factorization.

12407729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 12407729 is about 3522.4606456283. The cubic root of 12407729 is about 231.5069854075.

The spelling of 12407729 in words is "twelve million, four hundred seven thousand, seven hundred twenty-nine".