450290 has 16 divisors (see below), whose sum is σ = 833112. Its totient is φ = 175104.

The previous prime is 450287. The next prime is 450293. The reversal of 450290 is 92054.

It is an interprime number because it is at equal distance from previous prime (450287) and next prime (450293).

It can be written as a sum of positive squares in 4 ways, for example, as 405769 + 44521 = 637^2 + 211^2 .

It is a super-2 number, since 2×450290² = 405522168200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (450293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239 + ... + 978.

2⁴⁵⁰²⁹⁰ is an apocalyptic number.

450290 is a deficient number, since it is larger than the sum of its proper divisors (382822).

450290 is a wasteful number, since it uses less digits than its factorization.

450290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 450290 is about 671.0365116743. The cubic root of 450290 is about 76.6474011663.

The spelling of 450290 in words is "four hundred fifty thousand, two hundred ninety".