8216479 has 4 divisors (see below), whose sum is σ = 8438584. Its totient is φ = 7994376.

The previous prime is 8216477. The next prime is 8216489. The reversal of 8216479 is 9746128.

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 8216479 - 2¹ = 8216477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 222067 = 8216479 / (8 + 2 + 1 + 6 + 4 + 7 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216471) 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, 110997 + ... + 111070.

It is an arithmetic number, because the mean of its divisors is an integer number (2109646).

Almost surely, 2^8216479 is an apocalyptic number.

8216479 is a deficient number, since it is larger than the sum of its proper divisors (222105).

8216479 is a wasteful number, since it uses less digits than its factorization.

8216479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222104.

The product of its digits is 24192, while the sum is 37.

The square root of 8216479 is about 2866.4401267077. The cubic root of 8216479 is about 201.7879600301.

It can be divided in two parts, 82 and 16479, that added together give a palindrome (16561).

The spelling of 8216479 in words is "eight million, two hundred sixteen thousand, four hundred seventy-nine".