838816423 has 4 divisors (see below), whose sum is σ = 839065608. Its totient is φ = 838567240.

The previous prime is 838816421. The next prime is 838816439. The reversal of 838816423 is 324618838.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 838816423 - 2¹ = 838816421 is a prime.

It is a super-2 number, since 2×838816423² = 1407225982989029858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 838816423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838816421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119473 + ... + 126298.

It is an arithmetic number, because the mean of its divisors is an integer number (209766402).

Almost surely, 2^838816423 is an apocalyptic number.

838816423 is a deficient number, since it is larger than the sum of its proper divisors (249185).

838816423 is a wasteful number, since it uses less digits than its factorization.

838816423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249184.

The product of its digits is 221184, while the sum is 43.

The square root of 838816423 is about 28962.3276516236. The cubic root of 838816423 is about 943.0954326757.

The spelling of 838816423 in words is "eight hundred thirty-eight million, eight hundred sixteen thousand, four hundred twenty-three".