10861139 has 2 divisors, whose sum is σ = 10861140. Its totient is φ = 10861138.

The previous prime is 10861127. The next prime is 10861163. The reversal of 10861139 is 93116801.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10861139 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (10861199) 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 as a sum of consecutive naturals, namely, 5430569 + 5430570.

It is an arithmetic number, because the mean of its divisors is an integer number (5430570).

Almost surely, 2^10861139 is an apocalyptic number.

10861139 is a deficient number, since it is larger than the sum of its proper divisors (1).

10861139 is an equidigital number, since it uses as much as digits as its factorization.

10861139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 10861139 is about 3295.6242200834. The cubic root of 10861139 is about 221.4582127110.

The spelling of 10861139 in words is "ten million, eight hundred sixty-one thousand, one hundred thirty-nine".