11689147 has 2 divisors, whose sum is σ = 11689148. Its totient is φ = 11689146.

The previous prime is 11689133. The next prime is 11689157. The reversal of 11689147 is 74198611.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11689147 is a prime.

It is not a weakly prime, because it can be changed into another prime (11689127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5844573 + 5844574.

It is an arithmetic number, because the mean of its divisors is an integer number (5844574).

Almost surely, 2^11689147 is an apocalyptic number.

11689147 is the 1828-th centered heptagonal number.

11689147 is a deficient number, since it is larger than the sum of its proper divisors (1).

11689147 is an equidigital number, since it uses as much as digits as its factorization.

11689147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 37.

The square root of 11689147 is about 3418.9394554452. The cubic root of 11689147 is about 226.9486515979.

The spelling of 11689147 in words is "eleven million, six hundred eighty-nine thousand, one hundred forty-seven".