11790991 has 2 divisors, whose sum is σ = 11790992. Its totient is φ = 11790990.

The previous prime is 11790971. The next prime is 11791007. The reversal of 11790991 is 19909711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11790991 - 2⁵ = 11790959 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11790991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11790941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5895495 + 5895496.

It is an arithmetic number, because the mean of its divisors is an integer number (5895496).

Almost surely, 2^11790991 is an apocalyptic number.

11790991 is a deficient number, since it is larger than the sum of its proper divisors (1).

11790991 is an equidigital number, since it uses as much as digits as its factorization.

11790991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 37.

The square root of 11790991 is about 3433.8012464323. The cubic root of 11790991 is about 227.6058582345.

The spelling of 11790991 in words is "eleven million, seven hundred ninety thousand, nine hundred ninety-one".