404401000240 has 40 divisors (see below), whose sum is σ = 940324168080. Its totient is φ = 161744599296.

The previous prime is 404401000147. The next prime is 404401000253. The reversal of 404401000240 is 42000104404.

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

It is a super-2 number, since 2×404401000240² (a number of 24 digits) contains 22 as substring.

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, 595062 + ... + 1078378.

It is an arithmetic number, because the mean of its divisors is an integer number (23508104202).

Almost surely, 2^404401000240 is an apocalyptic number.

404401000240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404401000240 is an abundant number, since it is smaller than the sum of its proper divisors (535923167840).

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

404401000240 is a wasteful number, since it uses less digits than its factorization.

404401000240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493789 (or 493783 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 404401000240 its reverse (42000104404), we get a palindrome (446401104644).

The spelling of 404401000240 in words is "four hundred four billion, four hundred one million, two hundred forty", and thus it is an aban number.