4404365421 has 4 divisors (see below), whose sum is σ = 5872487232. Its totient is φ = 2936243612.

The previous prime is 4404365363. The next prime is 4404365437. The reversal of 4404365421 is 1245634044.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4404365421 - 2²² = 4400171117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4404365521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734060901 + ... + 734060906.

It is an arithmetic number, because the mean of its divisors is an integer number (1468121808).

Almost surely, 2^4404365421 is an apocalyptic number.

It is an amenable number.

4404365421 is a deficient number, since it is larger than the sum of its proper divisors (1468121811).

4404365421 is a wasteful number, since it uses less digits than its factorization.

4404365421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468121810.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 4404365421 is about 66365.3932482887. The cubic root of 4404365421 is about 1639.1842836368.

Adding to 4404365421 its reverse (1245634044), we get a palindrome (5649999465).

The spelling of 4404365421 in words is "four billion, four hundred four million, three hundred sixty-five thousand, four hundred twenty-one".