938440 has 32 divisors (see below), whose sum is σ = 2187000. Its totient is φ = 361984.

The previous prime is 938437. The next prime is 938447. The reversal of 938440 is 44839.

It can be written as a sum of positive squares in 4 ways, for example, as 887364 + 51076 = 942^2 + 226^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 938399 and 938408.

It is not an unprimeable number, because it can be changed into a prime (938447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756 + ... + 1564.

2⁹³⁸⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 938440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1093500).

938440 is an abundant number, since it is smaller than the sum of its proper divisors (1248560).

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

938440 is a wasteful number, since it uses less digits than its factorization.

938440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 938440 is about 968.7311288485. The cubic root of 938440 is about 97.9043909967.

It can be divided in two parts, 938 and 440, that added together give a triangular number (1378 = T₅₂).

The spelling of 938440 in words is "nine hundred thirty-eight thousand, four hundred forty".