8861139 has 24 divisors (see below), whose sum is σ = 14972672. Its totient is φ = 4944240.

The previous prime is 8861137. The next prime is 8861143. The reversal of 8861139 is 9311688.

8861139 is a `hidden beast` number, since 8 + 8 + 611 + 39 = 666.

It is not a de Polignac number, because 8861139 - 2¹ = 8861137 is a prime.

It is a Duffinian number.

8861139 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8861137) 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 23 ways as a sum of consecutive naturals, for example, 1074 + ... + 4344.

Almost surely, 2^8861139 is an apocalyptic number.

8861139 is a deficient number, since it is larger than the sum of its proper divisors (6111533).

8861139 is a wasteful number, since it uses less digits than its factorization.

8861139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327 (or 3324 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 8861139 is about 2976.7665343456. The cubic root of 8861139 is about 206.9330456287.

It can be divided in two parts, 886 and 1139, that added together give a square (2025 = 45²).

The spelling of 8861139 in words is "eight million, eight hundred sixty-one thousand, one hundred thirty-nine".