438030629 has 2 divisors, whose sum is σ = 438030630. Its totient is φ = 438030628.

The previous prime is 438030613. The next prime is 438030631. The reversal of 438030629 is 926030834.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384081604 + 53949025 = 19598^2 + 7345^2 .

It is a cyclic number.

It is not a de Polignac number, because 438030629 - 2⁴ = 438030613 is a prime.

It is a Sophie Germain prime.

Together with 438030631, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438030829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219015314 + 219015315.

It is an arithmetic number, because the mean of its divisors is an integer number (219015315).

Almost surely, 2^438030629 is an apocalyptic number.

It is an amenable number.

438030629 is a deficient number, since it is larger than the sum of its proper divisors (1).

438030629 is an equidigital number, since it uses as much as digits as its factorization.

438030629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 438030629 is about 20929.1812787792. The cubic root of 438030629 is about 759.4540336693.

The spelling of 438030629 in words is "four hundred thirty-eight million, thirty thousand, six hundred twenty-nine".