1038405839 has 12 divisors (see below), whose sum is σ = 1083107256. Its totient is φ = 995004192.

The previous prime is 1038405821. The next prime is 1038405859. The reversal of 1038405839 is 9385048301.

It is a de Polignac number, because none of the positive numbers 2^k-1038405839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1038405796 and 1038405805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1038405859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116489 + ... + 125085.

It is an arithmetic number, because the mean of its divisors is an integer number (90258938).

Almost surely, 2^1038405839 is an apocalyptic number.

1038405839 is a deficient number, since it is larger than the sum of its proper divisors (44701417).

1038405839 is an frugal number, since it uses more digits than its factorization.

1038405839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8746 (or 8693 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1038405839 is about 32224.3050972399. The cubic root of 1038405839 is about 1012.6414662671.

The spelling of 1038405839 in words is "one billion, thirty-eight million, four hundred five thousand, eight hundred thirty-nine".