11950909 has 2 divisors, whose sum is σ = 11950910. Its totient is φ = 11950908.

The previous prime is 11950907. The next prime is 11950919. The reversal of 11950909 is 90905911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10582009 + 1368900 = 3253^2 + 1170^2 .

It is a cyclic number.

It is not a de Polignac number, because 11950909 - 2¹ = 11950907 is a prime.

Together with 11950907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11950901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5975454 + 5975455.

It is an arithmetic number, because the mean of its divisors is an integer number (5975455).

Almost surely, 2^11950909 is an apocalyptic number.

It is an amenable number.

11950909 is a deficient number, since it is larger than the sum of its proper divisors (1).

11950909 is an equidigital number, since it uses as much as digits as its factorization.

11950909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 11950909 is about 3457.0086780337. The cubic root of 11950909 is about 228.6302264472.

The spelling of 11950909 in words is "eleven million, nine hundred fifty thousand, nine hundred nine".