84347147 has 2 divisors, whose sum is σ = 84347148. Its totient is φ = 84347146.

The previous prime is 84347129. The next prime is 84347189. The reversal of 84347147 is 74174348.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84347147 - 2⁶ = 84347083 is a prime.

It is a super-2 number, since 2×84347147² = 14228882414079218, 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 84347147.

It is not a weakly prime, because it can be changed into another prime (84346147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42173573 + 42173574.

It is an arithmetic number, because the mean of its divisors is an integer number (42173574).

Almost surely, 2^84347147 is an apocalyptic number.

84347147 is a deficient number, since it is larger than the sum of its proper divisors (1).

84347147 is an equidigital number, since it uses as much as digits as its factorization.

84347147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 38.

The square root of 84347147 is about 9184.0702850098. The cubic root of 84347147 is about 438.5543930997.

The spelling of 84347147 in words is "eighty-four million, three hundred forty-seven thousand, one hundred forty-seven".