8869421 has 12 divisors (see below), whose sum is σ = 10176096. Its totient is φ = 7710120.

The previous prime is 8869397. The next prime is 8869423. The reversal of 8869421 is 1249688.

8869421 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8869421 - 2²² = 4675117 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8869423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1190 + ... + 4376.

It is an arithmetic number, because the mean of its divisors is an integer number (848008).

Almost surely, 2^8869421 is an apocalyptic number.

It is an amenable number.

8869421 is a deficient number, since it is larger than the sum of its proper divisors (1306675).

8869421 is a wasteful number, since it uses less digits than its factorization.

8869421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232 (or 3221 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 8869421 is about 2978.1573161940. The cubic root of 8869421 is about 206.9974950493.

The spelling of 8869421 in words is "eight million, eight hundred sixty-nine thousand, four hundred twenty-one".