11439851 has 2 divisors, whose sum is σ = 11439852. Its totient is φ = 11439850.

The previous prime is 11439821. The next prime is 11439853. The reversal of 11439851 is 15893411.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11439851 is a prime.

Together with 11439853, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₇₅₃₅₆₆ and since 11439851 and 753566 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (11439853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5719925 + 5719926.

It is an arithmetic number, because the mean of its divisors is an integer number (5719926).

Almost surely, 2^11439851 is an apocalyptic number.

11439851 is a deficient number, since it is larger than the sum of its proper divisors (1).

11439851 is an equidigital number, since it uses as much as digits as its factorization.

11439851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 32.

The square root of 11439851 is about 3382.2848785991. The cubic root of 11439851 is about 225.3236560176.

The spelling of 11439851 in words is "eleven million, four hundred thirty-nine thousand, eight hundred fifty-one".