8771421 has 4 divisors (see below), whose sum is σ = 11695232. Its totient is φ = 5847612.

The previous prime is 8771401. The next prime is 8771423. The reversal of 8771421 is 1241778.

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 not a de Polignac number, because 8771421 - 2¹³ = 8763229 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 (8771423) 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, 1461901 + ... + 1461906.

It is an arithmetic number, because the mean of its divisors is an integer number (2923808).

Almost surely, 2^8771421 is an apocalyptic number.

It is an amenable number.

8771421 is a deficient number, since it is larger than the sum of its proper divisors (2923811).

8771421 is a wasteful number, since it uses less digits than its factorization.

8771421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923810.

The product of its digits is 3136, while the sum is 30.

The square root of 8771421 is about 2961.6584880772. The cubic root of 8771421 is about 206.2322842451.

The spelling of 8771421 in words is "eight million, seven hundred seventy-one thousand, four hundred twenty-one".