405876 has 24 divisors (see below), whose sum is σ = 957600. Its totient is φ = 133792.

The previous prime is 405871. The next prime is 405893. The reversal of 405876 is 678504.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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 405876.

It is not an unprimeable number, because it can be changed into a prime (405871) by changing a digit.

405876 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675 + ... + 1901.

It is an arithmetic number, because the mean of its divisors is an integer number (39900).

2⁴⁰⁵⁸⁷⁶ is an apocalyptic number.

It is an amenable number.

405876 is an abundant number, since it is smaller than the sum of its proper divisors (551724).

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

405876 is a wasteful number, since it uses less digits than its factorization.

405876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 405876 is about 637.0839819051. The cubic root of 405876 is about 74.0396670700.

The spelling of 405876 in words is "four hundred five thousand, eight hundred seventy-six".