11286139 has 4 divisors (see below), whose sum is σ = 11650240. Its totient is φ = 10922040.

The previous prime is 11286137. The next prime is 11286173. The reversal of 11286139 is 93168211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93168211 = 17 ⋅5480483.

It is a cyclic number.

It is not a de Polignac number, because 11286139 - 2¹ = 11286137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 364069 = 11286139 / (1 + 1 + 2 + 8 + 6 + 1 + 3 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11286139.

It is not an unprimeable number, because it can be changed into a prime (11286131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182004 + ... + 182065.

It is an arithmetic number, because the mean of its divisors is an integer number (2912560).

Almost surely, 2^11286139 is an apocalyptic number.

11286139 is a deficient number, since it is larger than the sum of its proper divisors (364101).

11286139 is an equidigital number, since it uses as much as digits as its factorization.

11286139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364100.

The product of its digits is 2592, while the sum is 31.

The square root of 11286139 is about 3359.4849307595. The cubic root of 11286139 is about 224.3099119613.

The spelling of 11286139 in words is "eleven million, two hundred eighty-six thousand, one hundred thirty-nine".