486640871 has 2 divisors, whose sum is σ = 486640872. Its totient is φ = 486640870.

The previous prime is 486640853. The next prime is 486640897. The reversal of 486640871 is 178046684.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-486640871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (486645871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243320435 + 243320436.

It is an arithmetic number, because the mean of its divisors is an integer number (243320436).

Almost surely, 2^486640871 is an apocalyptic number.

486640871 is a deficient number, since it is larger than the sum of its proper divisors (1).

486640871 is an equidigital number, since it uses as much as digits as its factorization.

486640871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 486640871 is about 22059.9381458788. The cubic root of 486640871 is about 786.5678543616.

The spelling of 486640871 in words is "four hundred eighty-six million, six hundred forty thousand, eight hundred seventy-one".