816438422 has 8 divisors (see below), whose sum is σ = 1224786096. Its totient is φ = 408176392.

The previous prime is 816438407. The next prime is 816438431. The reversal of 816438422 is 224834618.

816438422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14408 + ... + 42900.

It is an arithmetic number, because the mean of its divisors is an integer number (153098262).

Almost surely, 2^816438422 is an apocalyptic number.

816438422 is a deficient number, since it is larger than the sum of its proper divisors (408347674).

816438422 is a wasteful number, since it uses less digits than its factorization.

816438422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42822.

The product of its digits is 73728, while the sum is 38.

The square root of 816438422 is about 28573.3866036212. The cubic root of 816438422 is about 934.6330728728.

The spelling of 816438422 in words is "eight hundred sixteen million, four hundred thirty-eight thousand, four hundred twenty-two".