449815974642 has 48 divisors (see below), whose sum is σ = 990651392640. Its totient is φ = 147485190816.

The previous prime is 449815974623. The next prime is 449815974659. The reversal of 449815974642 is 246479518944.

449815974642 is a `hidden beast` number, since 4 + 4 + 9 + 81 + 5 + 97 + 464 + 2 = 666.

It is a super-2 number, since 2×449815974642² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 449815974642.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315258 + ... + 999509.

It is an arithmetic number, because the mean of its divisors is an integer number (20638570680).

Almost surely, 2^449815974642 is an apocalyptic number.

449815974642 is an abundant number, since it is smaller than the sum of its proper divisors (540835417998).

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

449815974642 is a wasteful number, since it uses less digits than its factorization.

449815974642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315087 (or 1315084 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 449815974642 in words is "four hundred forty-nine billion, eight hundred fifteen million, nine hundred seventy-four thousand, six hundred forty-two".