1039805039 has 48 divisors (see below), whose sum is σ = 1397904480. Its totient is φ = 764225280.

The previous prime is 1039805029. The next prime is 1039805089. The reversal of 1039805039 is 9305089301.

It is a de Polignac number, because none of the positive numbers 2^k-1039805039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1039804993 and 1039805011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1039805029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 640649 + ... + 642269.

It is an arithmetic number, because the mean of its divisors is an integer number (29123010).

Almost surely, 2^1039805039 is an apocalyptic number.

1039805039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1039805039 is a deficient number, since it is larger than the sum of its proper divisors (358099441).

1039805039 is a wasteful number, since it uses less digits than its factorization.

1039805039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1713 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 1039805039 is about 32246.0081095319. The cubic root of 1039805039 is about 1013.0960900654.

The spelling of 1039805039 in words is "one billion, thirty-nine million, eight hundred five thousand, thirty-nine".