438679420 has 12 divisors (see below), whose sum is σ = 921226824. Its totient is φ = 175471760.

The previous prime is 438679399. The next prime is 438679427. The reversal of 438679420 is 24976834.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438679427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10966966 + ... + 10967005.

It is an arithmetic number, because the mean of its divisors is an integer number (76768902).

Almost surely, 2^438679420 is an apocalyptic number.

It is an amenable number.

438679420 is an abundant number, since it is smaller than the sum of its proper divisors (482547404).

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

438679420 is a wasteful number, since it uses less digits than its factorization.

438679420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21933980 (or 21933978 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 438679420 is about 20944.6752182983. The cubic root of 438679420 is about 759.8288049304.

The spelling of 438679420 in words is "four hundred thirty-eight million, six hundred seventy-nine thousand, four hundred twenty".