8679689949 has 32 divisors (see below), whose sum is σ = 14035113216. Its totient is φ = 4657766400.

The previous prime is 8679689933. The next prime is 8679689957. The reversal of 8679689949 is 9499869768.

8679689949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8679689949 - 2⁴ = 8679689933 is a prime.

It is a super-2 number, since 2×8679689949² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8679689959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136549 + ... + 189749.

It is an arithmetic number, because the mean of its divisors is an integer number (438597288).

Almost surely, 2^8679689949 is an apocalyptic number.

It is an amenable number.

8679689949 is a deficient number, since it is larger than the sum of its proper divisors (5355423267).

8679689949 is a wasteful number, since it uses less digits than its factorization.

8679689949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53685.

The product of its digits is 423263232, while the sum is 75.

The square root of 8679689949 is about 93164.8536144398. The cubic root of 8679689949 is about 2055.1084137191.

The spelling of 8679689949 in words is "eight billion, six hundred seventy-nine million, six hundred eighty-nine thousand, nine hundred forty-nine".