985737449 has 2 divisors, whose sum is σ = 985737450. Its totient is φ = 985737448.

The previous prime is 985737437. The next prime is 985737451. The reversal of 985737449 is 944737589.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 954377449 + 31360000 = 30893^2 + 5600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985737449 is a prime.

It is a super-2 number, since 2×985737449² = 1943356636722055202, which contains 22 as substring.

Together with 985737451, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 985737394 and 985737403.

It is not a weakly prime, because it can be changed into another prime (985737419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492868724 + 492868725.

It is an arithmetic number, because the mean of its divisors is an integer number (492868725).

Almost surely, 2^985737449 is an apocalyptic number.

It is an amenable number.

985737449 is a deficient number, since it is larger than the sum of its proper divisors (1).

985737449 is an equidigital number, since it uses as much as digits as its factorization.

985737449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The square root of 985737449 is about 31396.4559942679. The cubic root of 985737449 is about 995.2230332579.

The spelling of 985737449 in words is "nine hundred eighty-five million, seven hundred thirty-seven thousand, four hundred forty-nine".