438713 has 4 divisors (see below), whose sum is σ = 478608. Its totient is φ = 398820.

The previous prime is 438707. The next prime is 438721. The reversal of 438713 is 317834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19931 + ... + 19952.

It is an arithmetic number, because the mean of its divisors is an integer number (119652).

2⁴³⁸⁷¹³ is an apocalyptic number.

It is an amenable number.

438713 is a deficient number, since it is larger than the sum of its proper divisors (39895).

438713 is a wasteful number, since it uses less digits than its factorization.

438713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39894.

The product of its digits is 2016, while the sum is 26.

The square root of 438713 is about 662.3541348856. The cubic root of 438713 is about 75.9848192209.

The spelling of 438713 in words is "four hundred thirty-eight thousand, seven hundred thirteen".