84746489 has 2 divisors, whose sum is σ = 84746490. Its totient is φ = 84746488.

The previous prime is 84746477. The next prime is 84746531. The reversal of 84746489 is 98464748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83905600 + 840889 = 9160^2 + 917^2 .

It is a cyclic number.

It is not a de Polignac number, because 84746489 - 2²⁴ = 67969273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84745489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42373244 + 42373245.

It is an arithmetic number, because the mean of its divisors is an integer number (42373245).

Almost surely, 2^84746489 is an apocalyptic number.

It is an amenable number.

84746489 is a deficient number, since it is larger than the sum of its proper divisors (1).

84746489 is an equidigital number, since it uses as much as digits as its factorization.

84746489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 50.

The square root of 84746489 is about 9205.7856264417. The cubic root of 84746489 is about 439.2454163677.

The spelling of 84746489 in words is "eighty-four million, seven hundred forty-six thousand, four hundred eighty-nine".