11539789 has 2 divisors, whose sum is σ = 11539790. Its totient is φ = 11539788.

The previous prime is 11539777. The next prime is 11539793. The reversal of 11539789 is 98793511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10989225 + 550564 = 3315^2 + 742^2 .

It is a cyclic number.

It is not a de Polignac number, because 11539789 - 2⁵ = 11539757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11539729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5769894 + 5769895.

It is an arithmetic number, because the mean of its divisors is an integer number (5769895).

Almost surely, 2^11539789 is an apocalyptic number.

It is an amenable number.

11539789 is a deficient number, since it is larger than the sum of its proper divisors (1).

11539789 is an equidigital number, since it uses as much as digits as its factorization.

11539789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 43.

The square root of 11539789 is about 3397.0264938619. The cubic root of 11539789 is about 225.9778935226.

The spelling of 11539789 in words is "eleven million, five hundred thirty-nine thousand, seven hundred eighty-nine".