405496 has 32 divisors (see below), whose sum is σ = 937440. Its totient is φ = 160128.

The previous prime is 405491. The next prime is 405497. The reversal of 405496 is 694504.

405496 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450 + ... + 1006.

It is an arithmetic number, because the mean of its divisors is an integer number (29295).

2⁴⁰⁵⁴⁹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468720).

405496 is an abundant number, since it is smaller than the sum of its proper divisors (531944).

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

405496 is a wasteful number, since it uses less digits than its factorization.

405496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 405496 is about 636.7856782309. The cubic root of 405496 is about 74.0165533945.

The spelling of 405496 in words is "four hundred five thousand, four hundred ninety-six".