11953867 has 2 divisors, whose sum is σ = 11953868. Its totient is φ = 11953866.

The previous prime is 11953847. The next prime is 11953883. The reversal of 11953867 is 76835911.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11953867 is a prime.

It is not a weakly prime, because it can be changed into another prime (11953807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5976933 + 5976934.

It is an arithmetic number, because the mean of its divisors is an integer number (5976934).

Almost surely, 2^11953867 is an apocalyptic number.

11953867 is a deficient number, since it is larger than the sum of its proper divisors (1).

11953867 is an equidigital number, since it uses as much as digits as its factorization.

11953867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 11953867 is about 3457.4364780860. The cubic root of 11953867 is about 228.6490878415.

The spelling of 11953867 in words is "eleven million, nine hundred fifty-three thousand, eight hundred sixty-seven".