838439423 has 4 divisors (see below), whose sum is σ = 865485888. Its totient is φ = 811392960.

The previous prime is 838439419. The next prime is 838439443. The reversal of 838439423 is 324934838.

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 838439423 - 2² = 838439419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838439443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13523186 + ... + 13523247.

It is an arithmetic number, because the mean of its divisors is an integer number (216371472).

Almost surely, 2^838439423 is an apocalyptic number.

838439423 is a deficient number, since it is larger than the sum of its proper divisors (27046465).

838439423 is a wasteful number, since it uses less digits than its factorization.

838439423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27046464.

The product of its digits is 497664, while the sum is 44.

The square root of 838439423 is about 28955.8184653793. The cubic root of 838439423 is about 942.9541223533.

The spelling of 838439423 in words is "eight hundred thirty-eight million, four hundred thirty-nine thousand, four hundred twenty-three".