440130002421 has 16 divisors (see below), whose sum is σ = 590822414208. Its totient is φ = 291435513600.

The previous prime is 440130002407. The next prime is 440130002461. The reversal of 440130002421 is 124200031044.

It is not a de Polignac number, because 440130002421 - 2⁷ = 440130002293 is a prime.

It is a super-2 number, since 2×440130002421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440130002461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577216 + ... + 1101561.

It is an arithmetic number, because the mean of its divisors is an integer number (36926400888).

Almost surely, 2^440130002421 is an apocalyptic number.

It is an amenable number.

440130002421 is a deficient number, since it is larger than the sum of its proper divisors (150692411787).

440130002421 is a wasteful number, since it uses less digits than its factorization.

440130002421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679372.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 440130002421 its reverse (124200031044), we get a palindrome (564330033465).

The spelling of 440130002421 in words is "four hundred forty billion, one hundred thirty million, two thousand, four hundred twenty-one".