8449469639 has 16 divisors (see below), whose sum is σ = 9222635520. Its totient is φ = 7694598240.

The previous prime is 8449469573. The next prime is 8449469641. The reversal of 8449469639 is 9369649448.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8449469639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8449469669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281234 + ... + 309824.

It is an arithmetic number, because the mean of its divisors is an integer number (576414720).

Almost surely, 2^8449469639 is an apocalyptic number.

8449469639 is a deficient number, since it is larger than the sum of its proper divisors (773165881).

8449469639 is a wasteful number, since it uses less digits than its factorization.

8449469639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28910.

The product of its digits is 40310784, while the sum is 62.

The square root of 8449469639 is about 91920.9967254490. The cubic root of 8449469639 is about 2036.7754419894.

The spelling of 8449469639 in words is "eight billion, four hundred forty-nine million, four hundred sixty-nine thousand, six hundred thirty-nine".