408400444416 has 44 divisors (see below), whose sum is σ = 1088536088552. Its totient is φ = 136133480448.

The previous prime is 408400444301. The next prime is 408400444423. The reversal of 408400444416 is 614444004804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66468355 + ... + 66474498.

It is an arithmetic number, because the mean of its divisors is an integer number (24739456558).

Almost surely, 2^408400444416 is an apocalyptic number.

It is an amenable number.

408400444416 is an abundant number, since it is smaller than the sum of its proper divisors (680135644136).

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

408400444416 is a wasteful number, since it uses less digits than its factorization.

408400444416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132942876 (or 132942858 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 39.

The spelling of 408400444416 in words is "four hundred eight billion, four hundred million, four hundred forty-four thousand, four hundred sixteen".