11994539 has 2 divisors, whose sum is σ = 11994540. Its totient is φ = 11994538.

The previous prime is 11994517. The next prime is 11994547. The reversal of 11994539 is 93549911.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11994539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11994496 and 11994505.

It is not a weakly prime, because it can be changed into another prime (11994559) 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, 5997269 + 5997270.

It is an arithmetic number, because the mean of its divisors is an integer number (5997270).

Almost surely, 2^11994539 is an apocalyptic number.

11994539 is a deficient number, since it is larger than the sum of its proper divisors (1).

11994539 is an equidigital number, since it uses as much as digits as its factorization.

11994539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 41.

The square root of 11994539 is about 3463.3132979850. The cubic root of 11994539 is about 228.9081138829.

The spelling of 11994539 in words is "eleven million, nine hundred ninety-four thousand, five hundred thirty-nine".