438317442 has 24 divisors (see below), whose sum is σ = 950406444. Its totient is φ = 145995264.

The previous prime is 438317437. The next prime is 438317459. The reversal of 438317442 is 244713834.

It can be written as a sum of positive squares in 2 ways, for example, as 438106761 + 210681 = 20931^2 + 459^2 .

It is a super-2 number, since 2×438317442² = 384244359922846728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 438317397 and 438317406.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17298 + ... + 34290.

Almost surely, 2^438317442 is an apocalyptic number.

438317442 is an abundant number, since it is smaller than the sum of its proper divisors (512089002).

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

438317442 is a wasteful number, since it uses less digits than its factorization.

438317442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18434 (or 18431 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 438317442 is about 20936.0321455619. The cubic root of 438317442 is about 759.6197555397.

The spelling of 438317442 in words is "four hundred thirty-eight million, three hundred seventeen thousand, four hundred forty-two".