487881109 has 2 divisors, whose sum is σ = 487881110. Its totient is φ = 487881108.

The previous prime is 487881101. The next prime is 487881133. The reversal of 487881109 is 901188784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261468900 + 226412209 = 16170^2 + 15047^2 .

It is a cyclic number.

It is not a de Polignac number, because 487881109 - 2³ = 487881101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487881101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243940554 + 243940555.

It is an arithmetic number, because the mean of its divisors is an integer number (243940555).

Almost surely, 2^487881109 is an apocalyptic number.

It is an amenable number.

487881109 is a deficient number, since it is larger than the sum of its proper divisors (1).

487881109 is an equidigital number, since it uses as much as digits as its factorization.

487881109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 487881109 is about 22088.0308991091. The cubic root of 487881109 is about 787.2354950769.

The spelling of 487881109 in words is "four hundred eighty-seven million, eight hundred eighty-one thousand, one hundred nine".