5447405985 has 128 divisors (see below), whose sum is σ = 10570383360. Its totient is φ = 2344083456.

The previous prime is 5447405923. The next prime is 5447405987. The reversal of 5447405985 is 5895047445.

It is not a de Polignac number, because 5447405985 - 2¹⁰ = 5447404961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5447405987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 15431569 + ... + 15431921.

It is an arithmetic number, because the mean of its divisors is an integer number (82581120).

Almost surely, 2^5447405985 is an apocalyptic number.

It is an amenable number.

5447405985 is a deficient number, since it is larger than the sum of its proper divisors (5122977375).

5447405985 is a wasteful number, since it uses less digits than its factorization.

5447405985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527.

The product of its (nonzero) digits is 4032000, while the sum is 51.

The square root of 5447405985 is about 73806.5443236574. The cubic root of 5447405985 is about 1759.5296161379.

It can be divided in two parts, 544740 and 5985, that added together give a triangular number (550725 = T₁₀₄₉).

The spelling of 5447405985 in words is "five billion, four hundred forty-seven million, four hundred five thousand, nine hundred eighty-five".