1039954404805 has 4 divisors (see below), whose sum is σ = 1247945285772. Its totient is φ = 831963523840.

The previous prime is 1039954404787. The next prime is 1039954404877. The reversal of 1039954404805 is 5084044599301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 671483552481 + 368470852324 = 819441^2 + 607018^2 .

It is not a de Polignac number, because 1039954404805 - 2¹⁹ = 1039953880517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 103995440476 + ... + 103995440485.

It is an arithmetic number, because the mean of its divisors is an integer number (311986321443).

Almost surely, 2^{1039954404805} is an apocalyptic number.

It is an amenable number.

1039954404805 is a deficient number, since it is larger than the sum of its proper divisors (207990880967).

1039954404805 is an equidigital number, since it uses as much as digits as its factorization.

1039954404805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207990880966.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 1039954404805 in words is "one trillion, thirty-nine billion, nine hundred fifty-four million, four hundred four thousand, eight hundred five".