11439863 has 2 divisors, whose sum is σ = 11439864. Its totient is φ = 11439862.

The previous prime is 11439859. The next prime is 11439887. The reversal of 11439863 is 36893411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11439863 - 2² = 11439859 is a prime.

It is a Chen prime.

It is equal to p₇₅₃₅₆₉ and since 11439863 and 753569 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11439853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5719931 + 5719932.

It is an arithmetic number, because the mean of its divisors is an integer number (5719932).

Almost surely, 2^11439863 is an apocalyptic number.

11439863 is a deficient number, since it is larger than the sum of its proper divisors (1).

11439863 is an equidigital number, since it uses as much as digits as its factorization.

11439863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 11439863 is about 3382.2866525474. The cubic root of 11439863 is about 225.3237348031.

The spelling of 11439863 in words is "eleven million, four hundred thirty-nine thousand, eight hundred sixty-three".