985389443 has 2 divisors, whose sum is σ = 985389444. Its totient is φ = 985389442.

The previous prime is 985389421. The next prime is 985389481. The reversal of 985389443 is 344983589.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 985389443 - 2⁸ = 985389187 is a prime.

It is not a weakly prime, because it can be changed into another prime (985389403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492694721 + 492694722.

It is an arithmetic number, because the mean of its divisors is an integer number (492694722).

Almost surely, 2^985389443 is an apocalyptic number.

985389443 is a deficient number, since it is larger than the sum of its proper divisors (1).

985389443 is an equidigital number, since it uses as much as digits as its factorization.

985389443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 53.

The square root of 985389443 is about 31390.9133826972. The cubic root of 985389443 is about 995.1059012051.

The spelling of 985389443 in words is "nine hundred eighty-five million, three hundred eighty-nine thousand, four hundred forty-three".