440635240 has 64 divisors (see below), whose sum is σ = 1083663360. Its totient is φ = 160527360.

The previous prime is 440635211. The next prime is 440635243. The reversal of 440635240 is 42536044.

It is a junction number, because it is equal to n+sod(n) for n = 440635199 and 440635208.

It is not an unprimeable number, because it can be changed into a prime (440635243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10629 + ... + 31531.

It is an arithmetic number, because the mean of its divisors is an integer number (16932240).

Almost surely, 2^440635240 is an apocalyptic number.

440635240 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 440635240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541831680).

440635240 is an abundant number, since it is smaller than the sum of its proper divisors (643028120).

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

440635240 is a wasteful number, since it uses less digits than its factorization.

440635240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20962 (or 20958 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 440635240 is about 20991.3134415167. The cubic root of 440635240 is about 760.9563445573.

The spelling of 440635240 in words is "four hundred forty million, six hundred thirty-five thousand, two hundred forty".