487749617 has 2 divisors, whose sum is σ = 487749618. Its totient is φ = 487749616.

The previous prime is 487749593. The next prime is 487749667. The reversal of 487749617 is 716947784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 472453696 + 15295921 = 21736^2 + 3911^2 .

It is a cyclic number.

It is not a de Polignac number, because 487749617 - 2²² = 483555313 is a prime.

It is not a weakly prime, because it can be changed into another prime (487749667) 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, 243874808 + 243874809.

It is an arithmetic number, because the mean of its divisors is an integer number (243874809).

Almost surely, 2^487749617 is an apocalyptic number.

It is an amenable number.

487749617 is a deficient number, since it is larger than the sum of its proper divisors (1).

487749617 is an equidigital number, since it uses as much as digits as its factorization.

487749617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2370816, while the sum is 53.

The square root of 487749617 is about 22085.0541543370. The cubic root of 487749617 is about 787.1647644085.

The spelling of 487749617 in words is "four hundred eighty-seven million, seven hundred forty-nine thousand, six hundred seventeen".