449681237 has 2 divisors, whose sum is σ = 449681238. Its totient is φ = 449681236.

The previous prime is 449681213. The next prime is 449681249. The reversal of 449681237 is 732186944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411846436 + 37834801 = 20294^2 + 6151^2 .

It is a cyclic number.

It is not a de Polignac number, because 449681237 - 2⁶ = 449681173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449681207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224840618 + 224840619.

It is an arithmetic number, because the mean of its divisors is an integer number (224840619).

Almost surely, 2^449681237 is an apocalyptic number.

It is an amenable number.

449681237 is a deficient number, since it is larger than the sum of its proper divisors (1).

449681237 is an equidigital number, since it uses as much as digits as its factorization.

449681237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 44.

The square root of 449681237 is about 21205.6887886246. The cubic root of 449681237 is about 766.1284481019.

The spelling of 449681237 in words is "four hundred forty-nine million, six hundred eighty-one thousand, two hundred thirty-seven".