438118 has 4 divisors (see below), whose sum is σ = 657180. Its totient is φ = 219058.

The previous prime is 438091. The next prime is 438131. The reversal of 438118 is 811834.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 811834 = 2 ⋅405917.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 438092 and 438101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109528 + ... + 109531.

It is an arithmetic number, because the mean of its divisors is an integer number (164295).

2⁴³⁸¹¹⁸ is an apocalyptic number.

438118 is a deficient number, since it is larger than the sum of its proper divisors (219062).

438118 is a wasteful number, since it uses less digits than its factorization.

438118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219061.

The product of its digits is 768, while the sum is 25.

The square root of 438118 is about 661.9048269955. The cubic root of 438118 is about 75.9504524695.

The spelling of 438118 in words is "four hundred thirty-eight thousand, one hundred eighteen".