11889539 has 2 divisors, whose sum is σ = 11889540. Its totient is φ = 11889538.

The previous prime is 11889529. The next prime is 11889547. The reversal of 11889539 is 93598811.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11889539 - 2¹² = 11885443 is a prime.

It is a super-2 number, since 2×11889539² = 282722275265042, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11889539.

It is not a weakly prime, because it can be changed into another prime (11889529) 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, 5944769 + 5944770.

It is an arithmetic number, because the mean of its divisors is an integer number (5944770).

Almost surely, 2^11889539 is an apocalyptic number.

11889539 is a deficient number, since it is larger than the sum of its proper divisors (1).

11889539 is an equidigital number, since it uses as much as digits as its factorization.

11889539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 44.

The square root of 11889539 is about 3448.1210825608. The cubic root of 11889539 is about 228.2382026264.

The spelling of 11889539 in words is "eleven million, eight hundred eighty-nine thousand, five hundred thirty-nine".