11839901 has 2 divisors, whose sum is σ = 11839902. Its totient is φ = 11839900.

The previous prime is 11839879. The next prime is 11839909. The reversal of 11839901 is 10993811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11215801 + 624100 = 3349^2 + 790^2 .

It is an emirp because it is prime and its reverse (10993811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11839901 is a prime.

It is a Chen prime.

It is equal to p₇₇₈₂₁₇ and since 11839901 and 778217 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11839909) 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, 5919950 + 5919951.

It is an arithmetic number, because the mean of its divisors is an integer number (5919951).

Almost surely, 2^11839901 is an apocalyptic number.

It is an amenable number.

11839901 is a deficient number, since it is larger than the sum of its proper divisors (1).

11839901 is an equidigital number, since it uses as much as digits as its factorization.

11839901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 11839901 is about 3440.9157211417. The cubic root of 11839901 is about 227.9201333583.

The spelling of 11839901 in words is "eleven million, eight hundred thirty-nine thousand, nine hundred one".