84847489 has 2 divisors, whose sum is σ = 84847490. Its totient is φ = 84847488.

The previous prime is 84847463. The next prime is 84847507. The reversal of 84847489 is 98474848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66699889 + 18147600 = 8167^2 + 4260^2 .

It is a cyclic number.

It is not a de Polignac number, because 84847489 - 2⁵ = 84847457 is a prime.

It is not a weakly prime, because it can be changed into another prime (84841489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42423744 + 42423745.

It is an arithmetic number, because the mean of its divisors is an integer number (42423745).

Almost surely, 2^84847489 is an apocalyptic number.

It is an amenable number.

84847489 is a deficient number, since it is larger than the sum of its proper divisors (1).

84847489 is an equidigital number, since it uses as much as digits as its factorization.

84847489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 52.

The square root of 84847489 is about 9211.2696736118. The cubic root of 84847489 is about 439.4198431596.

The spelling of 84847489 in words is "eighty-four million, eight hundred forty-seven thousand, four hundred eighty-nine".