440242452 has 120 divisors (see below), whose sum is σ = 1250686976. Its totient is φ = 134229312.

The previous prime is 440242447. The next prime is 440242459. The reversal of 440242452 is 254242044.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440242459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 534513 + ... + 535335.

Almost surely, 2^440242452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440242452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (625343488).

440242452 is an abundant number, since it is smaller than the sum of its proper divisors (810444524).

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

440242452 is a wasteful number, since it uses less digits than its factorization.

440242452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 440242452 is about 20981.9553902872. The cubic root of 440242452 is about 760.7301685351.

Adding to 440242452 its reverse (254242044), we get a palindrome (694484496).

The spelling of 440242452 in words is "four hundred forty million, two hundred forty-two thousand, four hundred fifty-two".