9869139 has 48 divisors (see below), whose sum is σ = 17472000. Its totient is φ = 5355504.

The previous prime is 9869137. The next prime is 9869143. The reversal of 9869139 is 9319689.

9869139 = T₄₇ + T₄₈ + ... + T₃₈₉.

It is not a de Polignac number, because 9869139 - 2¹ = 9869137 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9869094 and 9869103.

It is not an unprimeable number, because it can be changed into a prime (9869137) 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 47 ways as a sum of consecutive naturals, for example, 70932 + ... + 71070.

It is an arithmetic number, because the mean of its divisors is an integer number (364000).

Almost surely, 2^9869139 is an apocalyptic number.

9869139 is a deficient number, since it is larger than the sum of its proper divisors (7602861).

9869139 is a wasteful number, since it uses less digits than its factorization.

9869139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 172 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 9869139 is about 3141.5185818327. The cubic root of 9869139 is about 214.4995680302.

The spelling of 9869139 in words is "nine million, eight hundred sixty-nine thousand, one hundred thirty-nine".