8739128149 has 4 divisors (see below), whose sum is σ = 8745755040. Its totient is φ = 8732501260.

The previous prime is 8739128141. The next prime is 8739128173. The reversal of 8739128149 is 9418219378.

8739128149 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9418219378 = 2 ⋅4709109689.

It is a cyclic number.

It is not a de Polignac number, because 8739128149 - 2³ = 8739128141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8739128096 and 8739128105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8739128141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3311467 + ... + 3314104.

It is an arithmetic number, because the mean of its divisors is an integer number (2186438760).

Almost surely, 2^8739128149 is an apocalyptic number.

It is an amenable number.

8739128149 is a deficient number, since it is larger than the sum of its proper divisors (6626891).

8739128149 is a wasteful number, since it uses less digits than its factorization.

8739128149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6626890.

The product of its digits is 870912, while the sum is 52.

The square root of 8739128149 is about 93483.3041189709. The cubic root of 8739128149 is about 2059.7888485778.

The spelling of 8739128149 in words is "eight billion, seven hundred thirty-nine million, one hundred twenty-eight thousand, one hundred forty-nine".