8842671421 has 16 divisors (see below), whose sum is σ = 9536875200. Its totient is φ = 8173122048.

The previous prime is 8842671391. The next prime is 8842671427. The reversal of 8842671421 is 1241762488.

It is a cyclic number.

It is not a de Polignac number, because 8842671421 - 2⁹ = 8842670909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8842671427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155725 + ... + 204781.

It is an arithmetic number, because the mean of its divisors is an integer number (596054700).

Almost surely, 2^8842671421 is an apocalyptic number.

It is an amenable number.

8842671421 is a deficient number, since it is larger than the sum of its proper divisors (694203779).

8842671421 is a wasteful number, since it uses less digits than its factorization.

8842671421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49308.

The product of its digits is 172032, while the sum is 43.

The square root of 8842671421 is about 94035.4795861647. The cubic root of 8842671421 is about 2067.8918864105.

The spelling of 8842671421 in words is "eight billion, eight hundred forty-two million, six hundred seventy-one thousand, four hundred twenty-one".