4247784985 has 8 divisors (see below), whose sum is σ = 5397185736. Its totient is φ = 3198332160.

The previous prime is 4247784979. The next prime is 4247785051. The reversal of 4247784985 is 5894877424.

It can be written as a sum of positive squares in 4 ways, for example, as 2136658176 + 2111126809 = 46224^2 + 45947^2 .

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

It is not a de Polignac number, because 4247784985 - 2⁷ = 4247784857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24986886 + ... + 24987055.

It is an arithmetic number, because the mean of its divisors is an integer number (674648217).

Almost surely, 2^4247784985 is an apocalyptic number.

It is an amenable number.

4247784985 is a deficient number, since it is larger than the sum of its proper divisors (1149400751).

4247784985 is a wasteful number, since it uses less digits than its factorization.

4247784985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49973963.

The product of its digits is 18063360, while the sum is 58.

The square root of 4247784985 is about 65175.0334483995. The cubic root of 4247784985 is about 1619.5244482575.

The spelling of 4247784985 in words is "four billion, two hundred forty-seven million, seven hundred eighty-four thousand, nine hundred eighty-five".