449908762878 has 32 divisors (see below), whose sum is σ = 1026818802720. Its totient is φ = 145916354880.

The previous prime is 449908762867. The next prime is 449908762939. The reversal of 449908762878 is 878267809944.

449908762878 is a `hidden beast` number, since 4 + 499 + 0 + 8 + 7 + 62 + 8 + 78 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112587783 + ... + 112591778.

It is an arithmetic number, because the mean of its divisors is an integer number (32088087585).

Almost surely, 2^449908762878 is an apocalyptic number.

449908762878 is an abundant number, since it is smaller than the sum of its proper divisors (576910039842).

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

449908762878 is a wasteful number, since it uses less digits than its factorization.

449908762878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225179609 (or 225179603 counting only the distinct ones).

The product of its (nonzero) digits is 390168576, while the sum is 72.

The spelling of 449908762878 in words is "four hundred forty-nine billion, nine hundred eight million, seven hundred sixty-two thousand, eight hundred seventy-eight".