404112143440 has 40 divisors (see below), whose sum is σ = 940348516968. Its totient is φ = 161509324800.

The previous prime is 404112143423. The next prime is 404112143447. The reversal of 404112143440 is 44341211404.

It can be written as a sum of positive squares in 4 ways, for example, as 59768514576 + 344343628864 = 244476^2 + 586808^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×404112143440² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 404112143399 and 404112143408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404112143447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2021661 + ... + 2212540.

Almost surely, 2^404112143440 is an apocalyptic number.

404112143440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404112143440 is an abundant number, since it is smaller than the sum of its proper divisors (536236373528).

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

404112143440 is a wasteful number, since it uses less digits than its factorization.

404112143440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235407 (or 4235401 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 404112143440 its reverse (44341211404), we get a palindrome (448453354844).

The spelling of 404112143440 in words is "four hundred four billion, one hundred twelve million, one hundred forty-three thousand, four hundred forty".