405498 has 16 divisors (see below), whose sum is σ = 853920. Its totient is φ = 128016.

The previous prime is 405497. The next prime is 405499. The reversal of 405498 is 894504.

405498 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (405497) and next prime (405499).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 405498.

It is not an unprimeable number, because it can be changed into a prime (405491) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1665 + ... + 1892.

It is an arithmetic number, because the mean of its divisors is an integer number (53370).

2⁴⁰⁵⁴⁹⁸ is an apocalyptic number.

405498 is an abundant number, since it is smaller than the sum of its proper divisors (448422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405498 is a wasteful number, since it uses less digits than its factorization.

405498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 405498 is about 636.7872486161. The cubic root of 405498 is about 74.0166750832.

It can be divided in two parts, 405 and 498, that added together give a triangular number (903 = T₄₂).

The spelling of 405498 in words is "four hundred five thousand, four hundred ninety-eight".