1044453440 has 28 divisors (see below), whose sum is σ = 2487105516. Its totient is φ = 417781248.

The previous prime is 1044453409. The next prime is 1044453467. The reversal of 1044453440 is 443544401.

It can be written as a sum of positive squares in 2 ways, for example, as 635443264 + 409010176 = 25208^2 + 20224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631639 + ... + 1632278.

It is an arithmetic number, because the mean of its divisors is an integer number (88825197).

Almost surely, 2^1044453440 is an apocalyptic number.

1044453440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1044453440 is an abundant number, since it is smaller than the sum of its proper divisors (1442652076).

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

1044453440 is an equidigital number, since it uses as much as digits as its factorization.

1044453440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263934 (or 3263924 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 1044453440 is about 32318.0048889160. The cubic root of 1044453440 is about 1014.6035126248.

Adding to 1044453440 its reverse (443544401), we get a palindrome (1487997841).

It can be divided in two parts, 104 and 4453440, that added together give a palindrome (4453544).

The spelling of 1044453440 in words is "one billion, forty-four million, four hundred fifty-three thousand, four hundred forty".