487777109 has 2 divisors, whose sum is σ = 487777110. Its totient is φ = 487777108.

The previous prime is 487777097. The next prime is 487777117. The reversal of 487777109 is 901777784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420373009 + 67404100 = 20503^2 + 8210^2 .

It is a cyclic number.

It is not a de Polignac number, because 487777109 - 2²⁰ = 486728533 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487777159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243888554 + 243888555.

It is an arithmetic number, because the mean of its divisors is an integer number (243888555).

Almost surely, 2^487777109 is an apocalyptic number.

It is an amenable number.

487777109 is a deficient number, since it is larger than the sum of its proper divisors (1).

487777109 is an equidigital number, since it uses as much as digits as its factorization.

487777109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691488, while the sum is 50.

The square root of 487777109 is about 22085.6765574433. The cubic root of 487777109 is about 787.1795536407.

The spelling of 487777109 in words is "four hundred eighty-seven million, seven hundred seventy-seven thousand, one hundred nine".