438397 has 4 divisors (see below), whose sum is σ = 440800. Its totient is φ = 435996.

The previous prime is 438391. The next prime is 438401. The reversal of 438397 is 793834.

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-438397 is a prime.

It is a Duffinian number.

438397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438391) 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, 903 + ... + 1300.

It is an arithmetic number, because the mean of its divisors is an integer number (110200).

2⁴³⁸³⁹⁷ is an apocalyptic number.

It is an amenable number.

438397 is a deficient number, since it is larger than the sum of its proper divisors (2403).

438397 is a wasteful number, since it uses less digits than its factorization.

438397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402.

The product of its digits is 18144, while the sum is 34.

The square root of 438397 is about 662.1155488281. The cubic root of 438397 is about 75.9665711710.

The spelling of 438397 in words is "four hundred thirty-eight thousand, three hundred ninety-seven".