440019400 has 48 divisors (see below), whose sum is σ = 1027992240. Its totient is φ = 175156800.

The previous prime is 440019383. The next prime is 440019403. The reversal of 440019400 is 4910044.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (440019403) 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 11 ways as a sum of consecutive naturals, for example, 36987 + ... + 47413.

It is an arithmetic number, because the mean of its divisors is an integer number (21416505).

Almost surely, 2^440019400 is an apocalyptic number.

440019400 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 440019400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513996120).

440019400 is an abundant number, since it is smaller than the sum of its proper divisors (587972840).

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

440019400 is a wasteful number, since it uses less digits than its factorization.

440019400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10654 (or 10645 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 440019400 is about 20976.6393876617. The cubic root of 440019400 is about 760.6016703634.

Adding to 440019400 its reverse (4910044), we get a palindrome (444929444).

The spelling of 440019400 in words is "four hundred forty million, nineteen thousand, four hundred".