920791 has 2 divisors, whose sum is σ = 920792. Its totient is φ = 920790.

The previous prime is 920789. The next prime is 920807. The reversal of 920791 is 197029.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 920791 - 2¹ = 920789 is a prime.

Together with 920789, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920701) 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 as a sum of consecutive naturals, namely, 460395 + 460396.

It is an arithmetic number, because the mean of its divisors is an integer number (460396).

2⁹²⁰⁷⁹¹ is an apocalyptic number.

920791 is a deficient number, since it is larger than the sum of its proper divisors (1).

920791 is an equidigital number, since it uses as much as digits as its factorization.

920791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 920791 is about 959.5785533243. The cubic root of 920791 is about 97.2867484692.

It can be divided in two parts, 920 and 791, that added together give a triangular number (1711 = T₅₈).

The spelling of 920791 in words is "nine hundred twenty thousand, seven hundred ninety-one".