8638479 has 6 divisors (see below), whose sum is σ = 12477816. Its totient is φ = 5758980.

The previous prime is 8638477. The next prime is 8638481. The reversal of 8638479 is 9748368.

It is a happy number.

8638479 is a `hidden beast` number, since 8 + 638 + 4 + 7 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (8638477) and next prime (8638481).

It is not a de Polignac number, because 8638479 - 2¹ = 8638477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8638471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 479907 + ... + 479924.

It is an arithmetic number, because the mean of its divisors is an integer number (2079636).

Almost surely, 2^8638479 is an apocalyptic number.

8638479 is a deficient number, since it is larger than the sum of its proper divisors (3839337).

8638479 is a wasteful number, since it uses less digits than its factorization.

8638479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959837 (or 959834 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 8638479 is about 2939.1289525980. The cubic root of 8638479 is about 205.1850718139.

The spelling of 8638479 in words is "eight million, six hundred thirty-eight thousand, four hundred seventy-nine".