11990239 has 2 divisors, whose sum is σ = 11990240. Its totient is φ = 11990238.

The previous prime is 11990233. The next prime is 11990261. The reversal of 11990239 is 93209911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11990239 - 2⁹ = 11989727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11990233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5995119 + 5995120.

It is an arithmetic number, because the mean of its divisors is an integer number (5995120).

Almost surely, 2^11990239 is an apocalyptic number.

11990239 is a deficient number, since it is larger than the sum of its proper divisors (1).

11990239 is an equidigital number, since it uses as much as digits as its factorization.

11990239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 11990239 is about 3462.6924495254. The cubic root of 11990239 is about 228.8807563625.

The spelling of 11990239 in words is "eleven million, nine hundred ninety thousand, two hundred thirty-nine".