11139287 has 2 divisors, whose sum is σ = 11139288. Its totient is φ = 11139286.

The previous prime is 11139281. The next prime is 11139341. The reversal of 11139287 is 78293111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11139287 - 2⁶ = 11139223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11139281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5569643 + 5569644.

It is an arithmetic number, because the mean of its divisors is an integer number (5569644).

Almost surely, 2^11139287 is an apocalyptic number.

11139287 is a deficient number, since it is larger than the sum of its proper divisors (1).

11139287 is an equidigital number, since it uses as much as digits as its factorization.

11139287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 32.

The square root of 11139287 is about 3337.5570407111. The cubic root of 11139287 is about 223.3327761675.

The spelling of 11139287 in words is "eleven million, one hundred thirty-nine thousand, two hundred eighty-seven".