438307 has 4 divisors (see below), whose sum is σ = 441160. Its totient is φ = 435456.

The previous prime is 438301. The next prime is 438313. The reversal of 438307 is 703834.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (438301) and next prime (438313).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438307 is a prime.

It is a super-2 number, since 2×438307² = 384226052498, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (438301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182 + ... + 1507.

It is an arithmetic number, because the mean of its divisors is an integer number (110290).

2⁴³⁸³⁰⁷ is an apocalyptic number.

438307 is a deficient number, since it is larger than the sum of its proper divisors (2853).

438307 is a wasteful number, since it uses less digits than its factorization.

438307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 438307 is about 662.0475813716. The cubic root of 438307 is about 75.9613723372.

The spelling of 438307 in words is "four hundred thirty-eight thousand, three hundred seven".