920847 has 4 divisors (see below), whose sum is σ = 1227800. Its totient is φ = 613896.

The previous prime is 920833. The next prime is 920849. The reversal of 920847 is 748029.

920847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 920847 - 2⁶ = 920783 is a prime.

It is a D-number.

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 920847.

It is not an unprimeable number, because it can be changed into a prime (920849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153472 + ... + 153477.

It is an arithmetic number, because the mean of its divisors is an integer number (306950).

2⁹²⁰⁸⁴⁷ is an apocalyptic number.

920847 is a deficient number, since it is larger than the sum of its proper divisors (306953).

920847 is a wasteful number, since it uses less digits than its factorization.

920847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306952.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 920847 is about 959.6077323573. The cubic root of 920847 is about 97.2887206675.

The spelling of 920847 in words is "nine hundred twenty thousand, eight hundred forty-seven".