449638429 has 2 divisors, whose sum is σ = 449638430. Its totient is φ = 449638428.

The previous prime is 449638411. The next prime is 449638433. The reversal of 449638429 is 924836944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417262329 + 32376100 = 20427^2 + 5690^2 .

It is a cyclic number.

It is not a de Polignac number, because 449638429 - 2⁹ = 449637917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449638459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224819214 + 224819215.

It is an arithmetic number, because the mean of its divisors is an integer number (224819215).

Almost surely, 2^449638429 is an apocalyptic number.

It is an amenable number.

449638429 is a deficient number, since it is larger than the sum of its proper divisors (1).

449638429 is an equidigital number, since it uses as much as digits as its factorization.

449638429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 49.

The square root of 449638429 is about 21204.6794128089. The cubic root of 449638429 is about 766.1041364601.

The spelling of 449638429 in words is "four hundred forty-nine million, six hundred thirty-eight thousand, four hundred twenty-nine".