454039440 has 80 divisors (see below), whose sum is σ = 1421534016. Its totient is φ = 119872000.

The previous prime is 454039429. The next prime is 454039459. The reversal of 454039440 is 44930454.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14875 + ... + 33605.

Almost surely, 2^454039440 is an apocalyptic number.

454039440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 454039440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710767008).

454039440 is an abundant number, since it is smaller than the sum of its proper divisors (967494576).

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

454039440 is a wasteful number, since it uses less digits than its factorization.

454039440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18848 (or 18842 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 454039440 is about 21308.2012380210. The cubic root of 454039440 is about 768.5955395932.

Adding to 454039440 its reverse (44930454), we get a palindrome (498969894).

The spelling of 454039440 in words is "four hundred fifty-four million, thirty-nine thousand, four hundred forty".