449487143 has 12 divisors (see below), whose sum is σ = 523622520. Its totient is φ = 384722352.

The previous prime is 449487139. The next prime is 449487149. The reversal of 449487143 is 341784944.

It is not a de Polignac number, because 449487143 - 2² = 449487139 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 449487094 and 449487103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449487149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30005 + ... + 42417.

It is an arithmetic number, because the mean of its divisors is an integer number (43635210).

Almost surely, 2^449487143 is an apocalyptic number.

449487143 is a deficient number, since it is larger than the sum of its proper divisors (74135377).

449487143 is a wasteful number, since it uses less digits than its factorization.

449487143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13166 (or 13159 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 449487143 is about 21201.1118340525. Note that the first 3 decimals coincide. The cubic root of 449487143 is about 766.0182053178.

The spelling of 449487143 in words is "four hundred forty-nine million, four hundred eighty-seven thousand, one hundred forty-three".