438971956 has 12 divisors (see below), whose sum is σ = 794690820. Its totient is φ = 211917440.

The previous prime is 438971947. The next prime is 438971987. The reversal of 438971956 is 659179834.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 212168356 + 226803600 = 14566^2 + 15060^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1892005 + ... + 1892236.

It is an arithmetic number, because the mean of its divisors is an integer number (66224235).

Almost surely, 2^438971956 is an apocalyptic number.

It is an amenable number.

438971956 is a deficient number, since it is larger than the sum of its proper divisors (355718864).

438971956 is a wasteful number, since it uses less digits than its factorization.

438971956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784274 (or 3784272 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 52.

The square root of 438971956 is about 20951.6575955221. The cubic root of 438971956 is about 759.9976661978.

The spelling of 438971956 in words is "four hundred thirty-eight million, nine hundred seventy-one thousand, nine hundred fifty-six".