438274226 has 8 divisors (see below), whose sum is σ = 707981484. Its totient is φ = 202280400.

The previous prime is 438274183. The next prime is 438274231. The reversal of 438274226 is 622472834.

It is a Cunningham number, because it is equal to 20935²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 438274225 + 1 = 20935^2 + 1^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 438274226.

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, 8428325 + ... + 8428376.

Almost surely, 2^438274226 is an apocalyptic number.

438274226 is a deficient number, since it is larger than the sum of its proper divisors (269707258).

438274226 is a wasteful number, since it uses less digits than its factorization.

438274226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16856716.

The product of its digits is 129024, while the sum is 38.

The square root of 438274226 is about 20935.0000238834. Note that the first 4 decimals coincide. The cubic root of 438274226 is about 759.5947897629.

The spelling of 438274226 in words is "four hundred thirty-eight million, two hundred seventy-four thousand, two hundred twenty-six".