450387 has 16 divisors (see below), whose sum is σ = 762880. Its totient is φ = 257256.

The previous prime is 450383. The next prime is 450391. The reversal of 450387 is 783054.

It is an interprime number because it is at equal distance from previous prime (450383) and next prime (450391).

It is not a de Polignac number, because 450387 - 2² = 450383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

450387 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 450387.

It is not an unprimeable number, because it can be changed into a prime (450383) 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 15 ways as a sum of consecutive naturals, for example, 1003 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (47680).

2⁴⁵⁰³⁸⁷ is an apocalyptic number.

450387 is a deficient number, since it is larger than the sum of its proper divisors (312493).

450387 is a wasteful number, since it uses less digits than its factorization.

450387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2399 (or 2393 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 450387 is about 671.1087840283. The cubic root of 450387 is about 76.6529044821.

The spelling of 450387 in words is "four hundred fifty thousand, three hundred eighty-seven".