8429638 has 32 divisors (see below), whose sum is σ = 15427584. Its totient is φ = 3376032.

The previous prime is 8429627. The next prime is 8429639. The reversal of 8429638 is 8369248.

It is a super-2 number, since 2×8429638² = 142117593622088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8429638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8429639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14856 + ... + 15412.

It is an arithmetic number, because the mean of its divisors is an integer number (482112).

Almost surely, 2^8429638 is an apocalyptic number.

8429638 is a deficient number, since it is larger than the sum of its proper divisors (6997946).

8429638 is a wasteful number, since it uses less digits than its factorization.

8429638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 82944, while the sum is 40.

The square root of 8429638 is about 2903.3838878109. The cubic root of 8429638 is about 203.5180697391.

The spelling of 8429638 in words is "eight million, four hundred twenty-nine thousand, six hundred thirty-eight".