438660 has 36 divisors (see below), whose sum is σ = 1331148. Its totient is φ = 116928.

The previous prime is 438637. The next prime is 438661. The reversal of 438660 is 66834.

438660 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 304704 + 133956 = 552^2 + 366^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438661) by changing a digit.

438660 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1039 + ... + 1398.

2⁴³⁸⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

438660 is an abundant number, since it is smaller than the sum of its proper divisors (892488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438660 is a wasteful number, since it uses less digits than its factorization.

438660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 2447 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 438660 is about 662.3141248683. The cubic root of 438660 is about 75.9817592420.

The spelling of 438660 in words is "four hundred thirty-eight thousand, six hundred sixty".