404123412444444 has 108 divisors (see below), whose sum is σ = 1283249550356592. Its totient is φ = 104967120107520.

The previous prime is 404123412444407. The next prime is 404123412444461. The reversal of 404123412444444 is 444444214321404.

404123412444444 is a `hidden beast` number, since 4 + 0 + 4 + 12 + 34 + 124 + 44 + 444 = 666.

It is a super-3 number, since 3×404123412444444³ (a number of 45 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 404123412444444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6626681637 + ... + 6626742620.

Almost surely, 2^{404123412444444} is an apocalyptic number.

404123412444444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

404123412444444 is an abundant number, since it is smaller than the sum of its proper divisors (879126137912148).

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

404123412444444 is a wasteful number, since it uses less digits than its factorization.

404123412444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13253424296 (or 13253424280 counting only the distinct ones).

The product of its (nonzero) digits is 3145728, while the sum is 45.

Adding to 404123412444444 its reverse (444444214321404), we get a palindrome (848567626765848).

The spelling of 404123412444444 in words is "four hundred four trillion, one hundred twenty-three billion, four hundred twelve million, four hundred forty-four thousand, four hundred forty-four".