4400253520 has 80 divisors (see below), whose sum is σ = 11397551760. Its totient is φ = 1568673792.

The previous prime is 4400253499. The next prime is 4400253523. The reversal of 4400253520 is 253520044.

It can be written as a sum of positive squares in 8 ways, for example, as 490002496 + 3910251024 = 22136^2 + 62532^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400253523) 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, 42789 + ... + 103108.

It is an arithmetic number, because the mean of its divisors is an integer number (142469397).

Almost surely, 2^4400253520 is an apocalyptic number.

4400253520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4400253520 is an abundant number, since it is smaller than the sum of its proper divisors (6997298240).

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

4400253520 is a wasteful number, since it uses less digits than its factorization.

4400253520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145952 (or 145946 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 4400253520 is about 66334.4067584839. The cubic root of 4400253520 is about 1638.6740124648.

Adding to 4400253520 its reverse (253520044), we get a palindrome (4653773564).

The spelling of 4400253520 in words is "four billion, four hundred million, two hundred fifty-three thousand, five hundred twenty".