404440212120240 has 80 divisors (see below), whose sum is σ = 1253924317644768. Its totient is φ = 107836989032448.

The previous prime is 404440212120209. The next prime is 404440212120251. The reversal of 404440212120240 is 42021212044404.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 404440212120198 and 404440212120207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105409789 + ... + 109179228.

Almost surely, 2^{404440212120240} is an apocalyptic number.

404440212120240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404440212120240 is an abundant number, since it is smaller than the sum of its proper divisors (849484105524528).

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

404440212120240 is a wasteful number, since it uses less digits than its factorization.

404440212120240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214596886 (or 214596880 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 30.

Adding to 404440212120240 its reverse (42021212044404), we get a palindrome (446461424164644).

The spelling of 404440212120240 in words is "four hundred four trillion, four hundred forty billion, two hundred twelve million, one hundred twenty thousand, two hundred forty".