438913 has 2 divisors, whose sum is σ = 438914. Its totient is φ = 438912.

The previous prime is 438899. The next prime is 438937. The reversal of 438913 is 319834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288369 + 150544 = 537^2 + 388^2 .

It is a cyclic number.

It is not a de Polignac number, because 438913 - 2⁹ = 438401 is a prime.

It is not a weakly prime, because it can be changed into another prime (438953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219456 + 219457.

It is an arithmetic number, because the mean of its divisors is an integer number (219457).

2⁴³⁸⁹¹³ is an apocalyptic number.

It is an amenable number.

438913 is a deficient number, since it is larger than the sum of its proper divisors (1).

438913 is an equidigital number, since it uses as much as digits as its factorization.

438913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 438913 is about 662.5050943200. The cubic root of 438913 is about 75.9963640920.

The spelling of 438913 in words is "four hundred thirty-eight thousand, nine hundred thirteen".