8396638 has 4 divisors (see below), whose sum is σ = 12594960. Its totient is φ = 4198318.

The previous prime is 8396617. The next prime is 8396639. The reversal of 8396638 is 8366938.

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

It is a junction number, because it is equal to n+sod(n) for n = 8396594 and 8396603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8396639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2099158 + ... + 2099161.

It is an arithmetic number, because the mean of its divisors is an integer number (3148740).

Almost surely, 2^8396638 is an apocalyptic number.

8396638 is a deficient number, since it is larger than the sum of its proper divisors (4198322).

8396638 is a wasteful number, since it uses less digits than its factorization.

8396638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4198321.

The product of its digits is 186624, while the sum is 43.

The square root of 8396638 is about 2897.6952910891. The cubic root of 8396638 is about 203.2521477079.

It can be divided in two parts, 83 and 96638, that added together give a square (96721 = 311²).

The spelling of 8396638 in words is "eight million, three hundred ninety-six thousand, six hundred thirty-eight".