438694420 has 36 divisors (see below), whose sum is σ = 972313524. Its totient is φ = 166239360.

The previous prime is 438694391. The next prime is 438694427. The reversal of 438694420 is 24496834.

It can be written as a sum of positive squares in 2 ways, for example, as 296321796 + 142372624 = 17214^2 + 11932^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438694427) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 23161 + ... + 37600.

It is an arithmetic number, because the mean of its divisors is an integer number (27008709).

Almost surely, 2^438694420 is an apocalyptic number.

It is an amenable number.

438694420 is an abundant number, since it is smaller than the sum of its proper divisors (533619104).

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

438694420 is a wasteful number, since it uses less digits than its factorization.

438694420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60808 (or 60787 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 438694420 is about 20945.0333014775. The cubic root of 438694420 is about 759.8374652425.

The spelling of 438694420 in words is "four hundred thirty-eight million, six hundred ninety-four thousand, four hundred twenty".