409399896864 has 72 divisors (see below), whose sum is σ = 1250131842288. Its totient is φ = 116971397760.

The previous prime is 409399896847. The next prime is 409399896929. The reversal of 409399896864 is 468698993904.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43511442 + ... + 43520849.

It is an arithmetic number, because the mean of its divisors is an integer number (17362942254).

Almost surely, 2^409399896864 is an apocalyptic number.

It is an amenable number.

409399896864 is an abundant number, since it is smaller than the sum of its proper divisors (840731945424).

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

409399896864 is a wasteful number, since it uses less digits than its factorization.

409399896864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87032318 (or 87032303 counting only the distinct ones).

The product of its (nonzero) digits is 725594112, while the sum is 75.

The spelling of 409399896864 in words is "four hundred nine billion, three hundred ninety-nine million, eight hundred ninety-six thousand, eight hundred sixty-four".