4423015421 has 4 divisors (see below), whose sum is σ = 4825107744. Its totient is φ = 4020923100.

The previous prime is 4423015397. The next prime is 4423015481. The reversal of 4423015421 is 1245103244.

4423015421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4423015421 - 2²² = 4418821117 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 (4423015481) 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, 201046145 + ... + 201046166.

It is an arithmetic number, because the mean of its divisors is an integer number (1206276936).

Almost surely, 2^4423015421 is an apocalyptic number.

It is an amenable number.

4423015421 is a deficient number, since it is larger than the sum of its proper divisors (402092323).

4423015421 is a wasteful number, since it uses less digits than its factorization.

4423015421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402092322.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 4423015421 is about 66505.7547961077. The cubic root of 4423015421 is about 1641.4946988112.

Adding to 4423015421 its reverse (1245103244), we get a palindrome (5668118665).

The spelling of 4423015421 in words is "four billion, four hundred twenty-three million, fifteen thousand, four hundred twenty-one".