405353 has 4 divisors (see below), whose sum is σ = 436548. Its totient is φ = 374160.

The previous prime is 405347. The next prime is 405373. The reversal of 405353 is 353504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29584 + 375769 = 172^2 + 613^2 .

It is a cyclic number.

It is not a de Polignac number, because 405353 - 2¹⁶ = 339817 is a prime.

It is a super-2 number, since 2×405353² = 328622109218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15578 + ... + 15603.

It is an arithmetic number, because the mean of its divisors is an integer number (109137).

2⁴⁰⁵³⁵³ is an apocalyptic number.

It is an amenable number.

405353 is a deficient number, since it is larger than the sum of its proper divisors (31195).

405353 is a wasteful number, since it uses less digits than its factorization.

405353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31194.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 405353 is about 636.6733856539. The cubic root of 405353 is about 74.0078516139.

Adding to 405353 its reverse (353504), we get a palindrome (758857).

The spelling of 405353 in words is "four hundred five thousand, three hundred fifty-three".