449869686 has 36 divisors (see below), whose sum is σ = 1047482388.
Its totient is φ = 128430288.
The previous prime is 449869603. The next prime is 449869697. The reversal of 449869686 is 686968944.
It is a congruent 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 17 ways as a sum of consecutive naturals, for example, 363060 + ... + 364296.
It is an arithmetic number, because the mean of its divisors is an integer number (29096733).
Almost surely, 2449869686 is an apocalyptic number.
449869686 is an abundant number, since it is smaller than the sum of its proper divisors (597612702).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
449869686 is an equidigital number, since it uses as much as digits as its factorization.
449869686 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2493 (or 1249 counting only the distinct ones).
The product of its digits is 17915904, while the sum is 60.
The square root of 449869686 is about 21210.1316827595.
The cubic root of 449869686 is about 766.2354542540.
The spelling of 449869686 in words is "four hundred forty-nine million, eight hundred sixty-nine thousand, six hundred eighty-six".