985343969 has 2 divisors, whose sum is σ = 985343970. Its totient is φ = 985343968.

The previous prime is 985343963. The next prime is 985343993. The reversal of 985343969 is 969343589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 980503969 + 4840000 = 31313^2 + 2200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985343969 is a prime.

It is a super-2 number, since 2×985343969² = 1941805474489345922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (985343963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492671984 + 492671985.

It is an arithmetic number, because the mean of its divisors is an integer number (492671985).

Almost surely, 2^985343969 is an apocalyptic number.

It is an amenable number.

985343969 is a deficient number, since it is larger than the sum of its proper divisors (1).

985343969 is an equidigital number, since it uses as much as digits as its factorization.

985343969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6298560, while the sum is 56.

The square root of 985343969 is about 31390.1890564552. The cubic root of 985343969 is about 995.0905935038.

The spelling of 985343969 in words is "nine hundred eighty-five million, three hundred forty-three thousand, nine hundred sixty-nine".