11623979 has 2 divisors, whose sum is σ = 11623980. Its totient is φ = 11623978.

The previous prime is 11623973. The next prime is 11623987. The reversal of 11623979 is 97932611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11623979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11623973) 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, 5811989 + 5811990.

It is an arithmetic number, because the mean of its divisors is an integer number (5811990).

Almost surely, 2^11623979 is an apocalyptic number.

11623979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11623979 is an equidigital number, since it uses as much as digits as its factorization.

11623979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 38.

The square root of 11623979 is about 3409.3956942543. The cubic root of 11623979 is about 226.5261126406.

The spelling of 11623979 in words is "eleven million, six hundred twenty-three thousand, nine hundred seventy-nine".