11980091 has 2 divisors, whose sum is σ = 11980092. Its totient is φ = 11980090.

The previous prime is 11980057. The next prime is 11980099. The reversal of 11980091 is 19008911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11980091 - 2⁶ = 11980027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11980099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5990045 + 5990046.

It is an arithmetic number, because the mean of its divisors is an integer number (5990046).

Almost surely, 2^11980091 is an apocalyptic number.

11980091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11980091 is an equidigital number, since it uses as much as digits as its factorization.

11980091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 11980091 is about 3461.2268056283. The cubic root of 11980091 is about 228.8161666715.

The spelling of 11980091 in words is "eleven million, nine hundred eighty thousand, ninety-one".