920406 has 16 divisors (see below), whose sum is σ = 1856448. Its totient is φ = 304200.

The previous prime is 920399. The next prime is 920407. The reversal of 920406 is 604029.

920406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 920406.

It is not an unprimeable number, because it can be changed into a prime (920407) by changing a digit.

920406 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, 201 + ... + 1371.

It is an arithmetic number, because the mean of its divisors is an integer number (116028).

2⁹²⁰⁴⁰⁶ is an apocalyptic number.

920406 is an abundant number, since it is smaller than the sum of its proper divisors (936042).

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

920406 is a wasteful number, since it uses less digits than its factorization.

920406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 920406 is about 959.3779234483. The cubic root of 920406 is about 97.2731874404.

It can be divided in two parts, 920 and 406, that added together give a triangular number (1326 = T₅₁).

The spelling of 920406 in words is "nine hundred twenty thousand, four hundred six".