11281979 has 2 divisors, whose sum is σ = 11281980. Its totient is φ = 11281978.

The previous prime is 11281969. The next prime is 11281987. The reversal of 11281979 is 97918211.

11281979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11281979 - 2⁸ = 11281723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11281909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5640989 + 5640990.

It is an arithmetic number, because the mean of its divisors is an integer number (5640990).

Almost surely, 2^11281979 is an apocalyptic number.

11281979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11281979 is an equidigital number, since it uses as much as digits as its factorization.

11281979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 38.

The square root of 11281979 is about 3358.8657311658. The cubic root of 11281979 is about 224.2823488326.

The spelling of 11281979 in words is "eleven million, two hundred eighty-one thousand, nine hundred seventy-nine".