920447 has 6 divisors (see below), whose sum is σ = 1011864. Its totient is φ = 836660.

The previous prime is 920443. The next prime is 920467. The reversal of 920447 is 744029.

It is not a de Polignac number, because 920447 - 2² = 920443 is a prime.

It is a Duffinian number.

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 920447.

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 (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3683 + ... + 3924.

It is an arithmetic number, because the mean of its divisors is an integer number (168644).

2⁹²⁰⁴⁴⁷ is an apocalyptic number.

920447 is a deficient number, since it is larger than the sum of its proper divisors (91417).

920447 is a wasteful number, since it uses less digits than its factorization.

920447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7629 (or 7618 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 920447 is about 959.3992912234. The cubic root of 920447 is about 97.2746317818.

The spelling of 920447 in words is "nine hundred twenty thousand, four hundred forty-seven".