13865147 has 2 divisors, whose sum is σ = 13865148. Its totient is φ = 13865146.

The previous prime is 13865101. The next prime is 13865207. The reversal of 13865147 is 74156831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13865147 - 2⁸ = 13864891 is a prime.

It is not a weakly prime, because it can be changed into another prime (13865647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6932573 + 6932574.

It is an arithmetic number, because the mean of its divisors is an integer number (6932574).

Almost surely, 2^13865147 is an apocalyptic number.

13865147 is a deficient number, since it is larger than the sum of its proper divisors (1).

13865147 is an equidigital number, since it uses as much as digits as its factorization.

13865147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 35.

The square root of 13865147 is about 3723.5932914323. The cubic root of 13865147 is about 240.2378833497.

The spelling of 13865147 in words is "thirteen million, eight hundred sixty-five thousand, one hundred forty-seven".