405755 has 8 divisors (see below), whose sum is σ = 556512. Its totient is φ = 278208.

The previous prime is 405749. The next prime is 405763. The reversal of 405755 is 557504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405755 - 2⁸ = 405499 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5762 + ... + 5831.

It is an arithmetic number, because the mean of its divisors is an integer number (69564).

2⁴⁰⁵⁷⁵⁵ is an apocalyptic number.

405755 is a deficient number, since it is larger than the sum of its proper divisors (150757).

405755 is a wasteful number, since it uses less digits than its factorization.

405755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11605.

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 405755 is about 636.9890108942. The cubic root of 405755 is about 74.0323087552.

The spelling of 405755 in words is "four hundred five thousand, seven hundred fifty-five".