449543478 has 16 divisors (see below), whose sum is σ = 951974640. Its totient is φ = 141033216.

The previous prime is 449543473. The next prime is 449543483. The reversal of 449543478 is 874345944.

It is an interprime number because it is at equal distance from previous prime (449543473) and next prime (449543483).

It is a super-2 number, since 2×449543478² = 404178677224672968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449543473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2203543 + ... + 2203746.

It is an arithmetic number, because the mean of its divisors is an integer number (59498415).

Almost surely, 2^449543478 is an apocalyptic number.

449543478 is an abundant number, since it is smaller than the sum of its proper divisors (502431162).

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

449543478 is a wasteful number, since it uses less digits than its factorization.

449543478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4407311.

The product of its digits is 1935360, while the sum is 48.

The square root of 449543478 is about 21202.4403784093. The cubic root of 449543478 is about 766.0502061092.

The spelling of 449543478 in words is "four hundred forty-nine million, five hundred forty-three thousand, four hundred seventy-eight".