440022002421 has 8 divisors (see below), whose sum is σ = 617574740320. Its totient is φ = 277908633072.

The previous prime is 440022002377. The next prime is 440022002429. The reversal of 440022002421 is 124200220044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 440022002421 - 2¹⁴ = 440021986037 is a prime.

It is a super-2 number, since 2×440022002421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440022002429) 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, 3859842070 + ... + 3859842183.

It is an arithmetic number, because the mean of its divisors is an integer number (77196842540).

Almost surely, 2^440022002421 is an apocalyptic number.

It is an amenable number.

440022002421 is a deficient number, since it is larger than the sum of its proper divisors (177552737899).

440022002421 is a wasteful number, since it uses less digits than its factorization.

440022002421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7719684275.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 440022002421 its reverse (124200220044), we get a palindrome (564222222465).

The spelling of 440022002421 in words is "four hundred forty billion, twenty-two million, two thousand, four hundred twenty-one".