11950091 has 4 divisors (see below), whose sum is σ = 12094152. Its totient is φ = 11806032.

The previous prime is 11950073. The next prime is 11950111. The reversal of 11950091 is 19005911.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11950091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11950091.

It is not an unprimeable number, because it can be changed into a prime (11950021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71906 + ... + 72071.

It is an arithmetic number, because the mean of its divisors is an integer number (3023538).

Almost surely, 2^11950091 is an apocalyptic number.

11950091 is a deficient number, since it is larger than the sum of its proper divisors (144061).

11950091 is an equidigital number, since it uses as much as digits as its factorization.

11950091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144060.

The product of its (nonzero) digits is 405, while the sum is 26.

The square root of 11950091 is about 3456.8903656321. The cubic root of 11950091 is about 228.6250100018.

The spelling of 11950091 in words is "eleven million, nine hundred fifty thousand, ninety-one".