11965091 has 2 divisors, whose sum is σ = 11965092. Its totient is φ = 11965090.

The previous prime is 11965087. The next prime is 11965157. The reversal of 11965091 is 19056911.

It is a happy number.

11965091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11965091 - 2² = 11965087 is a prime.

It is not a weakly prime, because it can be changed into another prime (11961091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5982545 + 5982546.

It is an arithmetic number, because the mean of its divisors is an integer number (5982546).

Almost surely, 2^11965091 is an apocalyptic number.

11965091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11965091 is an equidigital number, since it uses as much as digits as its factorization.

11965091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 11965091 is about 3459.0592651760. The cubic root of 11965091 is about 228.7206282771.

The spelling of 11965091 in words is "eleven million, nine hundred sixty-five thousand, ninety-one".