4247886861 has 32 divisors (see below), whose sum is σ = 6469545600. Its totient is φ = 2752704000.

The previous prime is 4247886823. The next prime is 4247886887. The reversal of 4247886861 is 1686887424.

It is not a de Polignac number, because 4247886861 - 2⁷ = 4247886733 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4247886798 and 4247886807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4247886161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1885986 + ... + 1888236.

It is an arithmetic number, because the mean of its divisors is an integer number (202173300).

Almost surely, 2^4247886861 is an apocalyptic number.

It is an amenable number.

4247886861 is a deficient number, since it is larger than the sum of its proper divisors (2221658739).

4247886861 is a wasteful number, since it uses less digits than its factorization.

4247886861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186 (or 4180 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 54.

The square root of 4247886861 is about 65175.8150006580. The cubic root of 4247886861 is about 1619.5373953468.

It can be divided in two parts, 424788 and 6861, that added together give a square (431649 = 657²).

The spelling of 4247886861 in words is "four billion, two hundred forty-seven million, eight hundred eighty-six thousand, eight hundred sixty-one".