438682243 has 6 divisors (see below), whose sum is σ = 458585204. Its totient is φ = 419608596.

The previous prime is 438682213. The next prime is 438682301. The reversal of 438682243 is 342286834.

It is not a de Polignac number, because 438682243 - 2²¹ = 436585091 is a prime.

It is a super-2 number, since 2×438682243² = 384884220647022098, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 438682196 and 438682205.

It is not an unprimeable number, because it can be changed into a prime (438682213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 414105 + ... + 415162.

Almost surely, 2^438682243 is an apocalyptic number.

438682243 is a deficient number, since it is larger than the sum of its proper divisors (19902961).

438682243 is an equidigital number, since it uses as much as digits as its factorization.

438682243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829313 (or 829290 counting only the distinct ones).

The product of its digits is 221184, while the sum is 40.

The square root of 438682243 is about 20944.7426100203. The cubic root of 438682243 is about 759.8304348162.

The spelling of 438682243 in words is "four hundred thirty-eight million, six hundred eighty-two thousand, two hundred forty-three".