440444440 has 32 divisors (see below), whose sum is σ = 1007802000. Its totient is φ = 173190784.

The previous prime is 440444429. The next prime is 440444467. The reversal of 440444440 is 44444044.

It is a junction number, because it is equal to n+sod(n) for n = 440444399 and 440444408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90955 + ... + 95674.

Almost surely, 2^440444440 is an apocalyptic number.

440444440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440444440 is an abundant number, since it is smaller than the sum of its proper divisors (567357560).

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

440444440 is a wasteful number, since it uses less digits than its factorization.

440444440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186699 (or 186695 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 440444440 is about 20986.7682123761. The cubic root of 440444440 is about 760.8464944903.

Adding to 440444440 its reverse (44444044), we get a palindrome (484888484).

It can be divided in two parts, 44044 and 4440, that added together give a palindrome (48484).

The spelling of 440444440 in words is "four hundred forty million, four hundred forty-four thousand, four hundred forty".