409987538856 has 48 divisors (see below), whose sum is σ = 1269009050400. Its totient is φ = 117139296672.

The previous prime is 409987538819. The next prime is 409987538881. The reversal of 409987538856 is 658835789904.

409987538856 is a `hidden beast` number, since 4 + 0 + 9 + 9 + 8 + 7 + 538 + 85 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 406733166 + ... + 406734173.

It is an arithmetic number, because the mean of its divisors is an integer number (26437688550).

Almost surely, 2^409987538856 is an apocalyptic number.

It is an amenable number.

409987538856 is an abundant number, since it is smaller than the sum of its proper divisors (859021511544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

409987538856 is a wasteful number, since it uses less digits than its factorization.

409987538856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813467358 (or 813467351 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 72.

The spelling of 409987538856 in words is "four hundred nine billion, nine hundred eighty-seven million, five hundred thirty-eight thousand, eight hundred fifty-six".