838321839 has 16 divisors (see below), whose sum is σ = 1275526240. Its totient is φ = 543775680.

The previous prime is 838321837. The next prime is 838321873. The reversal of 838321839 is 938123838.

It is not a de Polignac number, because 838321839 - 2¹ = 838321837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 838321794 and 838321803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (838321837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418582 + ... + 420579.

It is an arithmetic number, because the mean of its divisors is an integer number (79720390).

Almost surely, 2^838321839 is an apocalyptic number.

838321839 is a deficient number, since it is larger than the sum of its proper divisors (437204401).

838321839 is a wasteful number, since it uses less digits than its factorization.

838321839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839207 (or 839201 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 838321839 is about 28953.7879905203. The cubic root of 838321839 is about 942.9100398599.

It can be divided in two parts, 838321 and 839, that added together give a triangular number (839160 = T₁₂₉₅).

The spelling of 838321839 in words is "eight hundred thirty-eight million, three hundred twenty-one thousand, eight hundred thirty-nine".