8427479 has 4 divisors (see below), whose sum is σ = 8447376. Its totient is φ = 8407584.

The previous prime is 8427467. The next prime is 8427481. The reversal of 8427479 is 9747248.

8427479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8427479 is a prime.

It is a d-powerful number, because it can be written as 8³ + 4⁶ + 2²³ + 7³ + 4⁷ + 7⁵ + 9³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8427439) 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, 9299 + ... + 10164.

It is an arithmetic number, because the mean of its divisors is an integer number (2111844).

Almost surely, 2^8427479 is an apocalyptic number.

8427479 is a deficient number, since it is larger than the sum of its proper divisors (19897).

8427479 is a wasteful number, since it uses less digits than its factorization.

8427479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19896.

The product of its digits is 112896, while the sum is 41.

The square root of 8427479 is about 2903.0120564682. The cubic root of 8427479 is about 203.5006932305.

The spelling of 8427479 in words is "eight million, four hundred twenty-seven thousand, four hundred seventy-nine".