438869 has 2 divisors, whose sum is σ = 438870. Its totient is φ = 438868.

The previous prime is 438853. The next prime is 438877. The reversal of 438869 is 968834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438244 + 625 = 662^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 438869 - 2⁴ = 438853 is a prime.

It is a super-2 number, since 2×438869² = 385211998322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 438869.

It is not a weakly prime, because it can be changed into another prime (438829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219434 + 219435.

It is an arithmetic number, because the mean of its divisors is an integer number (219435).

2⁴³⁸⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

438869 is a deficient number, since it is larger than the sum of its proper divisors (1).

438869 is an equidigital number, since it uses as much as digits as its factorization.

438869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 438869 is about 662.4718861959. The cubic root of 438869 is about 75.9938245213.

The spelling of 438869 in words is "four hundred thirty-eight thousand, eight hundred sixty-nine".