4425344421 has 4 divisors (see below), whose sum is σ = 5900459232. Its totient is φ = 2950229612.

The previous prime is 4425344347. The next prime is 4425344437. The reversal of 4425344421 is 1244435244.

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 4425344421 - 2⁷ = 4425344293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4425344821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 737557401 + ... + 737557406.

It is an arithmetic number, because the mean of its divisors is an integer number (1475114808).

Almost surely, 2^4425344421 is an apocalyptic number.

It is an amenable number.

4425344421 is a deficient number, since it is larger than the sum of its proper divisors (1475114811).

4425344421 is a wasteful number, since it uses less digits than its factorization.

4425344421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475114810.

The product of its digits is 61440, while the sum is 33.

The square root of 4425344421 is about 66523.2622546429. The cubic root of 4425344421 is about 1641.7827655079.

Adding to 4425344421 its reverse (1244435244), we get a palindrome (5669779665).

The spelling of 4425344421 in words is "four billion, four hundred twenty-five million, three hundred forty-four thousand, four hundred twenty-one".