438907 has 4 divisors (see below), whose sum is σ = 501616. Its totient is φ = 376200.

The previous prime is 438899. The next prime is 438913. The reversal of 438907 is 709834.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 438907 - 2³ = 438899 is a prime.

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

It is the 663-rd Hogben number.

It is a Duffinian number.

438907 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (438937) by changing a digit.

It is a nontrivial repunit in base 662.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31344 + ... + 31357.

It is an arithmetic number, because the mean of its divisors is an integer number (125404).

2⁴³⁸⁹⁰⁷ is an apocalyptic number.

438907 is a deficient number, since it is larger than the sum of its proper divisors (62709).

438907 is an equidigital number, since it uses as much as digits as its factorization.

438907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62708.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 438907 is about 662.5005660375. The cubic root of 438907 is about 75.9960177969.

The spelling of 438907 in words is "four hundred thirty-eight thousand, nine hundred seven".