450839 has 2 divisors, whose sum is σ = 450840. Its totient is φ = 450838.

The previous prime is 450829. The next prime is 450841. The reversal of 450839 is 938054.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450839 is a prime.

It is a Sophie Germain prime.

Together with 450841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225419 + 225420.

It is an arithmetic number, because the mean of its divisors is an integer number (225420).

2⁴⁵⁰⁸³⁹ is an apocalyptic number.

450839 is a deficient number, since it is larger than the sum of its proper divisors (1).

450839 is an equidigital number, since it uses as much as digits as its factorization.

450839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 450839 is about 671.4454557148. The cubic root of 450839 is about 76.6785383842.

The spelling of 450839 in words is "four hundred fifty thousand, eight hundred thirty-nine".