12440629 has 2 divisors, whose sum is σ = 12440630. Its totient is φ = 12440628.

The previous prime is 12440591. The next prime is 12440657. The reversal of 12440629 is 92604421.

It is an a-pointer prime, because the next prime (12440657) can be obtained adding 12440629 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12439729 + 900 = 3527^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 12440629 - 2¹⁵ = 12407861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12440597 and 12440606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12440429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6220314 + 6220315.

It is an arithmetic number, because the mean of its divisors is an integer number (6220315).

Almost surely, 2^12440629 is an apocalyptic number.

It is an amenable number.

12440629 is a deficient number, since it is larger than the sum of its proper divisors (1).

12440629 is an equidigital number, since it uses as much as digits as its factorization.

12440629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 12440629 is about 3527.1275848770. The cubic root of 12440629 is about 231.7114240480.

The spelling of 12440629 in words is "twelve million, four hundred forty thousand, six hundred twenty-nine".