11949239 has 2 divisors, whose sum is σ = 11949240. Its totient is φ = 11949238.

The previous prime is 11949199. The next prime is 11949241. The reversal of 11949239 is 93294911.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11949239 is a prime.

Together with 11949241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11949269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5974619 + 5974620.

It is an arithmetic number, because the mean of its divisors is an integer number (5974620).

Almost surely, 2^11949239 is an apocalyptic number.

11949239 is a deficient number, since it is larger than the sum of its proper divisors (1).

11949239 is an equidigital number, since it uses as much as digits as its factorization.

11949239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 38.

The square root of 11949239 is about 3456.7671312948. The cubic root of 11949239 is about 228.6195764828.

The spelling of 11949239 in words is "eleven million, nine hundred forty-nine thousand, two hundred thirty-nine".