10866139 has 2 divisors, whose sum is σ = 10866140. Its totient is φ = 10866138.

The previous prime is 10866137. The next prime is 10866161. The reversal of 10866139 is 93166801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10866139 - 2¹ = 10866137 is a prime.

Together with 10866137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10866131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5433069 + 5433070.

It is an arithmetic number, because the mean of its divisors is an integer number (5433070).

Almost surely, 2^10866139 is an apocalyptic number.

10866139 is a deficient number, since it is larger than the sum of its proper divisors (1).

10866139 is an equidigital number, since it uses as much as digits as its factorization.

10866139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 10866139 is about 3296.3827144311. The cubic root of 10866139 is about 221.4921907677.

It can be divided in two parts, 1086 and 6139, that added together give a square (7225 = 85²).

The spelling of 10866139 in words is "ten million, eight hundred sixty-six thousand, one hundred thirty-nine".