920444 has 24 divisors (see below), whose sum is σ = 1870848. Its totient is φ = 388080.

The previous prime is 920443. The next prime is 920467. The reversal of 920444 is 444029.

920444 = 77² + 78² + ... + 147².

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1757 + ... + 2219.

It is an arithmetic number, because the mean of its divisors is an integer number (77952).

2⁹²⁰⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

920444 is an abundant number, since it is smaller than the sum of its proper divisors (950404).

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

920444 is a wasteful number, since it uses less digits than its factorization.

920444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 920444 is about 959.3977277438. The cubic root of 920444 is about 97.2745260998.

The spelling of 920444 in words is "nine hundred twenty thousand, four hundred forty-four".