440040120020 has 24 divisors (see below), whose sum is σ = 924707432544. Its totient is φ = 175897346976.

The previous prime is 440040120017. The next prime is 440040120041. The reversal of 440040120020 is 20021040044.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7388414 + ... + 7447733.

It is an arithmetic number, because the mean of its divisors is an integer number (38529476356).

Almost surely, 2^440040120020 is an apocalyptic number.

It is an amenable number.

440040120020 is an abundant number, since it is smaller than the sum of its proper divisors (484667312524).

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

440040120020 is a wasteful number, since it uses less digits than its factorization.

440040120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14837639 (or 14837637 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 440040120020 its reverse (20021040044), we get a palindrome (460061160064).

The spelling of 440040120020 in words is "four hundred forty billion, forty million, one hundred twenty thousand, twenty".