440220040 has 32 divisors (see below), whose sum is σ = 1066688280. Its totient is φ = 162542592.

The previous prime is 440220037. The next prime is 440220091. The reversal of 440220040 is 40022044.

It can be written as a sum of positive squares in 4 ways, for example, as 147331044 + 292888996 = 12138^2 + 17114^2 .

It is a junction number, because it is equal to n+sod(n) for n = 440219996 and 440220023.

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, 422769 + ... + 423808.

Almost surely, 2^440220040 is an apocalyptic number.

440220040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

440220040 is an abundant number, since it is smaller than the sum of its proper divisors (626468240).

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

440220040 is a wasteful number, since it uses less digits than its factorization.

440220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846601 (or 846597 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 440220040 is about 20981.4213055265. The cubic root of 440220040 is about 760.7172591532.

Adding to 440220040 its reverse (40022044), we get a palindrome (480242084).

It can be divided in two parts, 4402 and 20040, that added together give a palindrome (24442).

The spelling of 440220040 in words is "four hundred forty million, two hundred twenty thousand, forty".