8961139 has 12 divisors (see below), whose sum is σ = 10171840. Its totient is φ = 7880400.

The previous prime is 8961137. The next prime is 8961149. The reversal of 8961139 is 9311698.

8961139 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 8961139 - 2¹ = 8961137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8961098 and 8961107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8961131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2557 + ... + 4945.

Almost surely, 2^8961139 is an apocalyptic number.

8961139 is a deficient number, since it is larger than the sum of its proper divisors (1210701).

8961139 is a wasteful number, since it uses less digits than its factorization.

8961139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442 (or 2431 counting only the distinct ones).

The product of its digits is 11664, while the sum is 37.

The square root of 8961139 is about 2993.5161599697. The cubic root of 8961139 is about 207.7085646696.

The spelling of 8961139 in words is "eight million, nine hundred sixty-one thousand, one hundred thirty-nine".