405790 has 64 divisors (see below), whose sum is σ = 995328. Its totient is φ = 115200.

The previous prime is 405781. The next prime is 405799. The reversal of 405790 is 97504.

It is an interprime number because it is at equal distance from previous prime (405781) and next prime (405799).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13075 + ... + 13105.

It is an arithmetic number, because the mean of its divisors is an integer number (15552).

2⁴⁰⁵⁷⁹⁰ is an apocalyptic number.

405790 is an abundant number, since it is smaller than the sum of its proper divisors (589538).

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

405790 is a wasteful number, since it uses less digits than its factorization.

405790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 405790 is about 637.0164833032. The cubic root of 405790 is about 74.0344373437.

The spelling of 405790 in words is "four hundred five thousand, seven hundred ninety".