11969147 has 2 divisors, whose sum is σ = 11969148. Its totient is φ = 11969146.

The previous prime is 11969137. The next prime is 11969159. The reversal of 11969147 is 74196911.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11969147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11969147.

It is not a weakly prime, because it can be changed into another prime (11969117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5984573 + 5984574.

It is an arithmetic number, because the mean of its divisors is an integer number (5984574).

Almost surely, 2^11969147 is an apocalyptic number.

11969147 is a deficient number, since it is larger than the sum of its proper divisors (1).

11969147 is an equidigital number, since it uses as much as digits as its factorization.

11969147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 38.

The square root of 11969147 is about 3459.6455020710. The cubic root of 11969147 is about 228.7464697316.

The spelling of 11969147 in words is "eleven million, nine hundred sixty-nine thousand, one hundred forty-seven".