450550440 has 48 divisors (see below), whose sum is σ = 1464290100. Its totient is φ = 120146688.

The previous prime is 450550423. The next prime is 450550459. The reversal of 450550440 is 44055054.

It can be written as a sum of positive squares in 2 ways, for example, as 387538596 + 63011844 = 19686^2 + 7938^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 625405 + ... + 626124.

Almost surely, 2^450550440 is an apocalyptic number.

450550440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450550440 is an abundant number, since it is smaller than the sum of its proper divisors (1013739660).

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

450550440 is a wasteful number, since it uses less digits than its factorization.

450550440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251546 (or 1251539 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 450550440 is about 21226.1734657945. The cubic root of 450550440 is about 766.6217549831.

It can be divided in two parts, 4505 and 50440, that added together give a palindrome (54945).

The spelling of 450550440 in words is "four hundred fifty million, five hundred fifty thousand, four hundred forty".