449821131 has 8 divisors (see below), whose sum is σ = 601927824. Its totient is φ = 298797600.

The previous prime is 449821121. The next prime is 449821153. The reversal of 449821131 is 131128944.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 449821131 - 2²⁷ = 315603403 is a prime.

It is a super-3 number, since 3×449821131³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 449821092 and 449821101.

It is not an unprimeable number, because it can be changed into a prime (449821111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269820 + ... + 271481.

It is an arithmetic number, because the mean of its divisors is an integer number (75240978).

Almost surely, 2^449821131 is an apocalyptic number.

449821131 is a deficient number, since it is larger than the sum of its proper divisors (152106693).

449821131 is a wasteful number, since it uses less digits than its factorization.

449821131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541581.

The product of its digits is 6912, while the sum is 33.

The square root of 449821131 is about 21208.9870338024. The cubic root of 449821131 is about 766.2078863440.

The spelling of 449821131 in words is "four hundred forty-nine million, eight hundred twenty-one thousand, one hundred thirty-one".