487400917 has 2 divisors, whose sum is σ = 487400918. Its totient is φ = 487400916.

The previous prime is 487400911. The next prime is 487400957. The reversal of 487400917 is 719004784.

It is an a-pointer prime, because the next prime (487400957) can be obtained adding 487400917 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382358916 + 105042001 = 19554^2 + 10249^2 .

It is a cyclic number.

It is not a de Polignac number, because 487400917 - 2⁷ = 487400789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 487400917.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487400911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243700458 + 243700459.

It is an arithmetic number, because the mean of its divisors is an integer number (243700459).

Almost surely, 2^487400917 is an apocalyptic number.

It is an amenable number.

487400917 is a deficient number, since it is larger than the sum of its proper divisors (1).

487400917 is an equidigital number, since it uses as much as digits as its factorization.

487400917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 487400917 is about 22077.1582636896. The cubic root of 487400917 is about 786.9771341293.

The spelling of 487400917 in words is "four hundred eighty-seven million, four hundred thousand, nine hundred seventeen".