4687481209 has 2 divisors, whose sum is σ = 4687481210. Its totient is φ = 4687481208.

The previous prime is 4687481189. The next prime is 4687481231. The reversal of 4687481209 is 9021847864.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3934801984 + 752679225 = 62728^2 + 27435^2 .

It is a cyclic number.

It is not a de Polignac number, because 4687481209 - 2⁷ = 4687481081 is a prime.

It is not a weakly prime, because it can be changed into another prime (4687401209) 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 as a sum of consecutive naturals, namely, 2343740604 + 2343740605.

It is an arithmetic number, because the mean of its divisors is an integer number (2343740605).

Almost surely, 2^4687481209 is an apocalyptic number.

It is an amenable number.

4687481209 is a deficient number, since it is larger than the sum of its proper divisors (1).

4687481209 is an equidigital number, since it uses as much as digits as its factorization.

4687481209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 4687481209 is about 68465.1824579472. The cubic root of 4687481209 is about 1673.5801388798.

The spelling of 4687481209 in words is "four billion, six hundred eighty-seven million, four hundred eighty-one thousand, two hundred nine".