920709479 has 2 divisors, whose sum is σ = 920709480. Its totient is φ = 920709478.

The previous prime is 920709457. The next prime is 920709509. The reversal of 920709479 is 974907029.

It is a weak prime.

It is an emirp because it is prime and its reverse (974907029) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920709479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (920709379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460354739 + 460354740.

It is an arithmetic number, because the mean of its divisors is an integer number (460354740).

Almost surely, 2^920709479 is an apocalyptic number.

920709479 is a deficient number, since it is larger than the sum of its proper divisors (1).

920709479 is an equidigital number, since it uses as much as digits as its factorization.

920709479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 920709479 is about 30343.1949372508. The cubic root of 920709479 is about 972.8387733370.

The spelling of 920709479 in words is "nine hundred twenty million, seven hundred nine thousand, four hundred seventy-nine".