4420400421 has 8 divisors (see below), whose sum is σ = 5897224960. Its totient is φ = 2945254752.

The previous prime is 4420400399. The next prime is 4420400447. The reversal of 4420400421 is 1240040244.

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

It is not a de Polignac number, because 4420400421 - 2⁵ = 4420400389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4420400461) 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, 413560 + ... + 424113.

It is an arithmetic number, because the mean of its divisors is an integer number (737153120).

Almost surely, 2^4420400421 is an apocalyptic number.

It is an amenable number.

4420400421 is a deficient number, since it is larger than the sum of its proper divisors (1476824539).

4420400421 is a wasteful number, since it uses less digits than its factorization.

4420400421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839435.

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

The square root of 4420400421 is about 66486.0919365848. The cubic root of 4420400421 is about 1641.1711371341.

Adding to 4420400421 its reverse (1240040244), we get a palindrome (5660440665).

The spelling of 4420400421 in words is "four billion, four hundred twenty million, four hundred thousand, four hundred twenty-one".