8449638 has 16 divisors (see below), whose sum is σ = 17152320. Its totient is φ = 2774376.

The previous prime is 8449627. The next prime is 8449667. The reversal of 8449638 is 8369448.

It is a self number, because there is not a number n which added to its sum of digits gives 8449638.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 10108 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (1072020).

Almost surely, 2^8449638 is an apocalyptic number.

8449638 is an abundant number, since it is smaller than the sum of its proper divisors (8702682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8449638 is a wasteful number, since it uses less digits than its factorization.

8449638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21091.

The product of its digits is 165888, while the sum is 42.

The square root of 8449638 is about 2906.8261041899. The cubic root of 8449638 is about 203.6788969910.

The spelling of 8449638 in words is "eight million, four hundred forty-nine thousand, six hundred thirty-eight".