84582989 has 2 divisors, whose sum is σ = 84582990. Its totient is φ = 84582988.

The previous prime is 84582977. The next prime is 84582997. The reversal of 84582989 is 98928548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83868964 + 714025 = 9158^2 + 845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84582989 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84582989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84582919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42291494 + 42291495.

It is an arithmetic number, because the mean of its divisors is an integer number (42291495).

Almost surely, 2^84582989 is an apocalyptic number.

It is an amenable number.

84582989 is a deficient number, since it is larger than the sum of its proper divisors (1).

84582989 is an equidigital number, since it uses as much as digits as its factorization.

84582989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1658880, while the sum is 53.

The square root of 84582989 is about 9196.9010541595. The cubic root of 84582989 is about 438.9627582074.

The spelling of 84582989 in words is "eighty-four million, five hundred eighty-two thousand, nine hundred eighty-nine".