8421379255 has 4 divisors (see below), whose sum is σ = 10105655112. Its totient is φ = 6737103400.

The previous prime is 8421379231. The next prime is 8421379259. The reversal of 8421379255 is 5529731248.

8421379255 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.

It is not a de Polignac number, because 8421379255 - 2⁹ = 8421378743 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 (8421379259) 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, 842137921 + ... + 842137930.

It is an arithmetic number, because the mean of its divisors is an integer number (2526413778).

Almost surely, 2^8421379255 is an apocalyptic number.

8421379255 is a deficient number, since it is larger than the sum of its proper divisors (1684275857).

8421379255 is a wasteful number, since it uses less digits than its factorization.

8421379255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684275856.

The product of its digits is 604800, while the sum is 46.

The square root of 8421379255 is about 91768.0731790746. The cubic root of 8421379255 is about 2034.5158396395.

The spelling of 8421379255 in words is "eight billion, four hundred twenty-one million, three hundred seventy-nine thousand, two hundred fifty-five".