4258439421 has 4 divisors (see below), whose sum is σ = 5677919232. Its totient is φ = 2838959612.

The previous prime is 4258439411. The next prime is 4258439441. The reversal of 4258439421 is 1249348524.

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 4258439421 - 2⁶ = 4258439357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4258439411) 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, 709739901 + ... + 709739906.

It is an arithmetic number, because the mean of its divisors is an integer number (1419479808).

Almost surely, 2^4258439421 is an apocalyptic number.

It is an amenable number.

4258439421 is a deficient number, since it is larger than the sum of its proper divisors (1419479811).

4258439421 is a wasteful number, since it uses less digits than its factorization.

4258439421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419479810.

The product of its digits is 276480, while the sum is 42.

The square root of 4258439421 is about 65256.7193551745. The cubic root of 4258439421 is about 1620.8773661581.

The spelling of 4258439421 in words is "four billion, two hundred fifty-eight million, four hundred thirty-nine thousand, four hundred twenty-one".