1039868839905 has 32 divisors (see below), whose sum is σ = 1913139969024. Its totient is φ = 472452232896.

The previous prime is 1039868839903. The next prime is 1039868839907. The reversal of 1039868839905 is 5099388689301.

It is an interprime number because it is at equal distance from previous prime (1039868839903) and next prime (1039868839907).

It is not a de Polignac number, because 1039868839905 - 2¹ = 1039868839903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1039868839905.

It is not an unprimeable number, because it can be changed into a prime (1039868839903) 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 31 ways as a sum of consecutive naturals, for example, 30361759 + ... + 30395988.

It is an arithmetic number, because the mean of its divisors is an integer number (59785624032).

Almost surely, 2^{1039868839905} is an apocalyptic number.

1039868839905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1039868839905 is a deficient number, since it is larger than the sum of its proper divisors (873271129119).

1039868839905 is a wasteful number, since it uses less digits than its factorization.

1039868839905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60757925.

The product of its (nonzero) digits is 100776960, while the sum is 69.

The spelling of 1039868839905 in words is "one trillion, thirty-nine billion, eight hundred sixty-eight million, eight hundred thirty-nine thousand, nine hundred five".