438915 has 16 divisors (see below), whose sum is σ = 727200. Its totient is φ = 225792.

The previous prime is 438913. The next prime is 438937. The reversal of 438915 is 519834.

It is not a de Polignac number, because 438915 - 2¹ = 438913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70 + ... + 939.

It is an arithmetic number, because the mean of its divisors is an integer number (45450).

2⁴³⁸⁹¹⁵ is an apocalyptic number.

438915 is a deficient number, since it is larger than the sum of its proper divisors (288285).

438915 is a wasteful number, since it uses less digits than its factorization.

438915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046.

The product of its digits is 4320, while the sum is 30.

The square root of 438915 is about 662.5066037407. The cubic root of 438915 is about 75.9964795230.

The spelling of 438915 in words is "four hundred thirty-eight thousand, nine hundred fifteen".