487991711 has 2 divisors, whose sum is σ = 487991712. Its totient is φ = 487991710.

The previous prime is 487991663. The next prime is 487991719. The reversal of 487991711 is 117199784.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-487991711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487991719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243995855 + 243995856.

It is an arithmetic number, because the mean of its divisors is an integer number (243995856).

Almost surely, 2^487991711 is an apocalyptic number.

487991711 is a deficient number, since it is larger than the sum of its proper divisors (1).

487991711 is an equidigital number, since it uses as much as digits as its factorization.

487991711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 47.

The square root of 487991711 is about 22090.5344208781. The cubic root of 487991711 is about 787.2949789961.

The spelling of 487991711 in words is "four hundred eighty-seven million, nine hundred ninety-one thousand, seven hundred eleven".