405230755 has 4 divisors (see below), whose sum is σ = 486276912. Its totient is φ = 324184600.

The previous prime is 405230743. The next prime is 405230783. The reversal of 405230755 is 557032504.

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

It is not a de Polignac number, because 405230755 - 2⁵ = 405230723 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 an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 40523071 + ... + 40523080.

It is an arithmetic number, because the mean of its divisors is an integer number (121569228).

Almost surely, 2^405230755 is an apocalyptic number.

405230755 is a deficient number, since it is larger than the sum of its proper divisors (81046157).

405230755 is an equidigital number, since it uses as much as digits as its factorization.

405230755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81046156.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 405230755 is about 20130.3441351607. The cubic root of 405230755 is about 740.0041118593.

The spelling of 405230755 in words is "four hundred five million, two hundred thirty thousand, seven hundred fifty-five".