449147643 has 16 divisors (see below), whose sum is σ = 684902400. Its totient is φ = 256473216.

The previous prime is 449147609. The next prime is 449147653. The reversal of 449147643 is 346741944.

It is not a de Polignac number, because 449147643 - 2¹³ = 449139451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 449147595 and 449147604.

It is not an unprimeable number, because it can be changed into a prime (449147653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26083 + ... + 39731.

It is an arithmetic number, because the mean of its divisors is an integer number (42806400).

Almost surely, 2^449147643 is an apocalyptic number.

449147643 is a deficient number, since it is larger than the sum of its proper divisors (235754757).

449147643 is a wasteful number, since it uses less digits than its factorization.

449147643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15226.

The product of its digits is 290304, while the sum is 42.

The square root of 449147643 is about 21193.1036660514. The cubic root of 449147643 is about 765.8252975503.

The spelling of 449147643 in words is "four hundred forty-nine million, one hundred forty-seven thousand, six hundred forty-three".