449992687 has 2 divisors, whose sum is σ = 449992688. Its totient is φ = 449992686.

The previous prime is 449992661. The next prime is 449992693. The reversal of 449992687 is 786299944.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449992687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449992087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224996343 + 224996344.

It is an arithmetic number, because the mean of its divisors is an integer number (224996344).

Almost surely, 2^449992687 is an apocalyptic number.

449992687 is a deficient number, since it is larger than the sum of its proper divisors (1).

449992687 is an equidigital number, since it uses as much as digits as its factorization.

449992687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 58.

The square root of 449992687 is about 21213.0310658331. The cubic root of 449992687 is about 766.3052812445.

The spelling of 449992687 in words is "four hundred forty-nine million, nine hundred ninety-two thousand, six hundred eighty-seven".