438143338 has 8 divisors (see below), whose sum is σ = 657631332. Its totient is φ = 218932896.

The previous prime is 438143327. The next prime is 438143411. The reversal of 438143338 is 833341834.

It can be written as a sum of positive squares in 2 ways, for example, as 432931249 + 5212089 = 20807^2 + 2283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 438143297 and 438143306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65395 + ... + 71782.

Almost surely, 2^438143338 is an apocalyptic number.

438143338 is a deficient number, since it is larger than the sum of its proper divisors (219487994).

438143338 is a wasteful number, since it uses less digits than its factorization.

438143338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138776.

The product of its digits is 82944, while the sum is 37.

The square root of 438143338 is about 20931.8737336150. The cubic root of 438143338 is about 759.5191660736.

The spelling of 438143338 in words is "four hundred thirty-eight million, one hundred forty-three thousand, three hundred thirty-eight".