8269421 has 4 divisors (see below), whose sum is σ = 8276700. Its totient is φ = 8262144.

The previous prime is 8269411. The next prime is 8269423. The reversal of 8269421 is 1249628.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 373321 + 7896100 = 611^2 + 2810^2 .

It is a cyclic number.

It is not a de Polignac number, because 8269421 - 2¹⁰ = 8268397 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 (8269423) 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, 1526 + ... + 4343.

It is an arithmetic number, because the mean of its divisors is an integer number (2069175).

Almost surely, 2^8269421 is an apocalyptic number.

It is an amenable number.

8269421 is a deficient number, since it is larger than the sum of its proper divisors (7279).

8269421 is a wasteful number, since it uses less digits than its factorization.

8269421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278.

The product of its digits is 6912, while the sum is 32.

The square root of 8269421 is about 2875.6600981340. The cubic root of 8269421 is about 202.2204321761.

The spelling of 8269421 in words is "eight million, two hundred sixty-nine thousand, four hundred twenty-one".