438829 has 2 divisors, whose sum is σ = 438830. Its totient is φ = 438828.

The previous prime is 438827. The next prime is 438833. The reversal of 438829 is 928834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 357604 + 81225 = 598^2 + 285^2 .

It is a cyclic number.

It is not a de Polignac number, because 438829 - 2¹ = 438827 is a prime.

Together with 438827, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 438794 and 438803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219414 + 219415.

It is an arithmetic number, because the mean of its divisors is an integer number (219415).

2⁴³⁸⁸²⁹ is an apocalyptic number.

It is an amenable number.

438829 is a deficient number, since it is larger than the sum of its proper divisors (1).

438829 is an equidigital number, since it uses as much as digits as its factorization.

438829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 438829 is about 662.4416955476. The cubic root of 438829 is about 75.9915156734.

The spelling of 438829 in words is "four hundred thirty-eight thousand, eight hundred twenty-nine".