408783854871 has 16 divisors (see below), whose sum is σ = 692120812800. Its totient is φ = 233590774104.

The previous prime is 408783854861. The next prime is 408783854879. The reversal of 408783854871 is 178458387804.

408783854871 is a `hidden beast` number, since 4 + 0 + 8 + 7 + 83 + 8 + 548 + 7 + 1 = 666.

It is not a de Polignac number, because 408783854871 - 2⁹ = 408783854359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 408783854799 and 408783854808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408783854879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1081438581 + ... + 1081438958.

It is an arithmetic number, because the mean of its divisors is an integer number (43257550800).

Almost surely, 2^408783854871 is an apocalyptic number.

408783854871 is a deficient number, since it is larger than the sum of its proper divisors (283336957929).

408783854871 is a wasteful number, since it uses less digits than its factorization.

408783854871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162877555 (or 2162877549 counting only the distinct ones).

The product of its (nonzero) digits is 48168960, while the sum is 63.

The spelling of 408783854871 in words is "four hundred eight billion, seven hundred eighty-three million, eight hundred fifty-four thousand, eight hundred seventy-one".