438214836 has 24 divisors (see below), whose sum is σ = 1023533280. Its totient is φ = 145924192.

The previous prime is 438214823. The next prime is 438214867. The reversal of 438214836 is 638412834.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 438214794 and 438214803.

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 7 ways as a sum of consecutive naturals, for example, 5691 + ... + 30146.

It is an arithmetic number, because the mean of its divisors is an integer number (42647220).

Almost surely, 2^438214836 is an apocalyptic number.

It is an amenable number.

438214836 is an abundant number, since it is smaller than the sum of its proper divisors (585318444).

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

438214836 is a wasteful number, since it uses less digits than its factorization.

438214836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36863 (or 36861 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 438214836 is about 20933.5815378067. The cubic root of 438214836 is about 759.5604776285.

The spelling of 438214836 in words is "four hundred thirty-eight million, two hundred fourteen thousand, eight hundred thirty-six".