4408378421 has 8 divisors (see below), whose sum is σ = 4758670080. Its totient is φ = 4071305392.

The previous prime is 4408378397. The next prime is 4408378453. The reversal of 4408378421 is 1248738044.

It is a happy number.

4408378421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 4408378421 - 2²² = 4404184117 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 (4408378321) 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, 3303965 + ... + 3305298.

It is an arithmetic number, because the mean of its divisors is an integer number (594833760).

Almost surely, 2^4408378421 is an apocalyptic number.

It is an amenable number.

4408378421 is a deficient number, since it is larger than the sum of its proper divisors (350291659).

4408378421 is a wasteful number, since it uses less digits than its factorization.

4408378421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6609315.

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 4408378421 is about 66395.6204956321. The cubic root of 4408378421 is about 1639.6819754394.

The spelling of 4408378421 in words is "four billion, four hundred eight million, three hundred seventy-eight thousand, four hundred twenty-one".