8421367 has 4 divisors (see below), whose sum is σ = 8693056. Its totient is φ = 8149680.

The previous prime is 8421251. The next prime is 8421403. The reversal of 8421367 is 7631248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8421367 - 2¹¹ = 8419319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 271657 = 8421367 / (8 + 4 + 2 + 1 + 3 + 6 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421067) 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, 135798 + ... + 135859.

It is an arithmetic number, because the mean of its divisors is an integer number (2173264).

Almost surely, 2^8421367 is an apocalyptic number.

8421367 is a deficient number, since it is larger than the sum of its proper divisors (271689).

8421367 is a wasteful number, since it uses less digits than its factorization.

8421367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271688.

The product of its digits is 8064, while the sum is 31.

The square root of 8421367 is about 2901.9591658051. The cubic root of 8421367 is about 203.4514852746.

It can be divided in two parts, 842 and 1367, that added together give a square (2209 = 47²).

The spelling of 8421367 in words is "eight million, four hundred twenty-one thousand, three hundred sixty-seven".