449531543 has 4 divisors (see below), whose sum is σ = 450784080. Its totient is φ = 448279008.

The previous prime is 449531519. The next prime is 449531617. The reversal of 449531543 is 345135944.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 449531543 - 2¹⁸ = 449269399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 449531497 and 449531506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449531843) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 625730 + ... + 626447.

It is an arithmetic number, because the mean of its divisors is an integer number (112696020).

Almost surely, 2^449531543 is an apocalyptic number.

449531543 is a deficient number, since it is larger than the sum of its proper divisors (1252537).

449531543 is a wasteful number, since it uses less digits than its factorization.

449531543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252536.

The product of its digits is 129600, while the sum is 38.

The square root of 449531543 is about 21202.1589230908. The cubic root of 449531543 is about 766.0434267203.

The spelling of 449531543 in words is "four hundred forty-nine million, five hundred thirty-one thousand, five hundred forty-three".