450399 has 16 divisors (see below), whose sum is σ = 645120. Its totient is φ = 278880.

The previous prime is 450391. The next prime is 450403. The reversal of 450399 is 993054.

It is not a de Polignac number, because 450399 - 2³ = 450391 is a prime.

450399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2614 + ... + 2780.

It is an arithmetic number, because the mean of its divisors is an integer number (40320).

2⁴⁵⁰³⁹⁹ is an apocalyptic number.

450399 is a deficient number, since it is larger than the sum of its proper divisors (194721).

450399 is a wasteful number, since it uses less digits than its factorization.

450399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 450399 is about 671.1177243971. The cubic root of 450399 is about 76.6535852497.

It can be divided in two parts, 4 and 50399, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 450399 in words is "four hundred fifty thousand, three hundred ninety-nine".