11071979 has 2 divisors, whose sum is σ = 11071980. Its totient is φ = 11071978.

The previous prime is 11071969. The next prime is 11072029. The reversal of 11071979 is 97917011.

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-11071979 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11071969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5535989 + 5535990.

It is an arithmetic number, because the mean of its divisors is an integer number (5535990).

Almost surely, 2^11071979 is an apocalyptic number.

11071979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11071979 is an equidigital number, since it uses as much as digits as its factorization.

11071979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3969, while the sum is 35.

The square root of 11071979 is about 3327.4583393335. The cubic root of 11071979 is about 222.8820453098.

The spelling of 11071979 in words is "eleven million, seventy-one thousand, nine hundred seventy-nine".