11979853 has 2 divisors, whose sum is σ = 11979854. Its totient is φ = 11979852.

The previous prime is 11979839. The next prime is 11979889. The reversal of 11979853 is 35897911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11923209 + 56644 = 3453^2 + 238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11979853 is a prime.

It is a super-3 number, since 3×11979853³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11979833) 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, 5989926 + 5989927.

It is an arithmetic number, because the mean of its divisors is an integer number (5989927).

Almost surely, 2^11979853 is an apocalyptic number.

It is an amenable number.

11979853 is a deficient number, since it is larger than the sum of its proper divisors (1).

11979853 is an equidigital number, since it uses as much as digits as its factorization.

11979853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 43.

The square root of 11979853 is about 3461.1924245843. The cubic root of 11979853 is about 228.8146514184.

The spelling of 11979853 in words is "eleven million, nine hundred seventy-nine thousand, eight hundred fifty-three".