438427972 has 18 divisors (see below), whose sum is σ = 775888638. Its totient is φ = 216749952.

The previous prime is 438427963. The next prime is 438427987. The reversal of 438427972 is 279724834.

It can be written as a sum of positive squares in only one way, i.e., 366109956 + 72318016 = 19134^2 + 8504^2 .

It is a super-3 number, since 3×438427972³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411913 + ... + 412975.

Almost surely, 2^438427972 is an apocalyptic number.

It is an amenable number.

438427972 is a deficient number, since it is larger than the sum of its proper divisors (337460666).

438427972 is an equidigital number, since it uses as much as digits as its factorization.

438427972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227 (or 1162 counting only the distinct ones).

The product of its digits is 677376, while the sum is 46.

The square root of 438427972 is about 20938.6716866185. The cubic root of 438427972 is about 759.6836009838.

The spelling of 438427972 in words is "four hundred thirty-eight million, four hundred twenty-seven thousand, nine hundred seventy-two".