449743686 has 32 divisors (see below), whose sum is σ = 1034899200. Its totient is φ = 127634016.

The previous prime is 449743673. The next prime is 449743733. The reversal of 449743686 is 686347944.

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, 29676 + ... + 42191.

It is an arithmetic number, because the mean of its divisors is an integer number (32340600).

Almost surely, 2^449743686 is an apocalyptic number.

449743686 is an abundant number, since it is smaller than the sum of its proper divisors (585155514).

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

449743686 is a wasteful number, since it uses less digits than its factorization.

449743686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72028.

The product of its digits is 3483648, while the sum is 51.

The square root of 449743686 is about 21207.1611961620. The cubic root of 449743686 is about 766.1639115494.

The spelling of 449743686 in words is "four hundred forty-nine million, seven hundred forty-three thousand, six hundred eighty-six".