11985907 has 2 divisors, whose sum is σ = 11985908. Its totient is φ = 11985906.

The previous prime is 11985889. The next prime is 11985917. The reversal of 11985907 is 70958911.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11985907 - 2¹¹ = 11983859 is a prime.

It is a super-2 number, since 2×11985907² = 287323933225298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11985907.

It is not a weakly prime, because it can be changed into another prime (11985917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5992953 + 5992954.

It is an arithmetic number, because the mean of its divisors is an integer number (5992954).

Almost surely, 2^11985907 is an apocalyptic number.

11985907 is a deficient number, since it is larger than the sum of its proper divisors (1).

11985907 is an equidigital number, since it uses as much as digits as its factorization.

11985907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 11985907 is about 3462.0668682162. The cubic root of 11985907 is about 228.8531886365.

The spelling of 11985907 in words is "eleven million, nine hundred eighty-five thousand, nine hundred seven".