450355405 has 4 divisors (see below), whose sum is σ = 540426492. Its totient is φ = 360284320.

The previous prime is 450355393. The next prime is 450355429. The reversal of 450355405 is 504553054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504553054 = 2 ⋅252276527.

It can be written as a sum of positive squares in 2 ways, for example, as 178863876 + 271491529 = 13374^2 + 16477^2 .

It is not a de Polignac number, because 450355405 - 2¹⁵ = 450322637 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45035536 + ... + 45035545.

It is an arithmetic number, because the mean of its divisors is an integer number (135106623).

Almost surely, 2^450355405 is an apocalyptic number.

It is an amenable number.

450355405 is a deficient number, since it is larger than the sum of its proper divisors (90071087).

450355405 is an equidigital number, since it uses as much as digits as its factorization.

450355405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90071086.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 450355405 is about 21221.5787584242. The cubic root of 450355405 is about 766.5111201977.

The spelling of 450355405 in words is "four hundred fifty million, three hundred fifty-five thousand, four hundred five".