454445440 has 128 divisors (see below), whose sum is σ = 1124953920. Its totient is φ = 175472640.

The previous prime is 454445429. The next prime is 454445447. The reversal of 454445440 is 44544454.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 454445396 and 454445405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454445447) by changing a digit.

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, 3317052 + ... + 3317188.

Almost surely, 2^454445440 is an apocalyptic number.

454445440 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 454445440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562476960).

454445440 is an abundant number, since it is smaller than the sum of its proper divisors (670508480).

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

454445440 is a wasteful number, since it uses less digits than its factorization.

454445440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 34.

The square root of 454445440 is about 21317.7259575218. The cubic root of 454445440 is about 768.8245628869.

Adding to 454445440 its reverse (44544454), we get a palindrome (498989894).

The spelling of 454445440 in words is "four hundred fifty-four million, four hundred forty-five thousand, four hundred forty".