450040 has 16 divisors (see below), whose sum is σ = 1012680. Its totient is φ = 180000.

The previous prime is 450029. The next prime is 450067. The reversal of 450040 is 40054.

450040 = T₂₉₅ + T₂₉₆ + ... + T₃₀₄.

It is a self number, because there is not a number n which added to its sum of digits gives 450040.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5586 + ... + 5665.

2⁴⁵⁰⁰⁴⁰ is an apocalyptic number.

450040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450040 is an abundant number, since it is smaller than the sum of its proper divisors (562640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450040 is a wasteful number, since it uses less digits than its factorization.

450040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11262 (or 11258 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 450040 is about 670.8502068271. The cubic root of 450040 is about 76.6332137185.

Adding to 450040 its reverse (40054), we get a palindrome (490094).

The spelling of 450040 in words is "four hundred fifty thousand, forty".