5439947566 has 8 divisors (see below), whose sum is σ = 8160286824. Its totient is φ = 2719851960.

The previous prime is 5439947563. The next prime is 5439947581. The reversal of 5439947566 is 6657499345.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 5439947566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5439947561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12696 + ... + 105076.

It is an arithmetic number, because the mean of its divisors is an integer number (1020035853).

Almost surely, 2^5439947566 is an apocalyptic number.

5439947566 is a deficient number, since it is larger than the sum of its proper divisors (2720339258).

5439947566 is a wasteful number, since it uses less digits than its factorization.

5439947566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121826.

The product of its digits is 24494400, while the sum is 58.

The square root of 5439947566 is about 73756.0002033733. Note that the first 3 decimals coincide. The cubic root of 5439947566 is about 1758.7262182724.

The spelling of 5439947566 in words is "five billion, four hundred thirty-nine million, nine hundred forty-seven thousand, five hundred sixty-six".