405488 has 10 divisors (see below), whose sum is σ = 785664. Its totient is φ = 202736.

The previous prime is 405487. The next prime is 405491. The reversal of 405488 is 884504.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 405488.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 405488.

It is not an unprimeable number, because it can be changed into a prime (405487) 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 as a sum of consecutive naturals, namely, 12656 + ... + 12687.

2⁴⁰⁵⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

405488 is a deficient number, since it is larger than the sum of its proper divisors (380176).

405488 is a wasteful number, since it uses less digits than its factorization.

405488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25351 (or 25345 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 405488 is about 636.7793966516. The cubic root of 405488 is about 74.0160666356.

The spelling of 405488 in words is "four hundred five thousand, four hundred eighty-eight".