450890 has 16 divisors (see below), whose sum is σ = 885600. Its totient is φ = 163920.

The previous prime is 450887. The next prime is 450893. The reversal of 450890 is 98054.

It is an interprime number because it is at equal distance from previous prime (450887) and next prime (450893).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (450893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1940 + ... + 2159.

It is an arithmetic number, because the mean of its divisors is an integer number (55350).

2⁴⁵⁰⁸⁹⁰ is an apocalyptic number.

450890 is a deficient number, since it is larger than the sum of its proper divisors (434710).

450890 is a wasteful number, since it uses less digits than its factorization.

450890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4117.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 450890 is about 671.4834324092. The cubic root of 450890 is about 76.6814296292.

Subtracting from 450890 its reverse (98054), we obtain a square (352836 = 594²).

The spelling of 450890 in words is "four hundred fifty thousand, eight hundred ninety".