196985449 has 2 divisors, whose sum is σ = 196985450. Its totient is φ = 196985448.

The previous prime is 196985441. The next prime is 196985491. The reversal of 196985449 is 944589691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195440400 + 1545049 = 13980^2 + 1243^2 .

It is a cyclic number.

It is not a de Polignac number, because 196985449 - 2³ = 196985441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196985449.

It is not a weakly prime, because it can be changed into another prime (196985441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98492724 + 98492725.

It is an arithmetic number, because the mean of its divisors is an integer number (98492725).

Almost surely, 2^196985449 is an apocalyptic number.

It is an amenable number.

196985449 is a deficient number, since it is larger than the sum of its proper divisors (1).

196985449 is an equidigital number, since it uses as much as digits as its factorization.

196985449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 55.

The square root of 196985449 is about 14035.1504801338. The cubic root of 196985449 is about 581.8504603149.

The spelling of 196985449 in words is "one hundred ninety-six million, nine hundred eighty-five thousand, four hundred forty-nine".