920099771 has 2 divisors, whose sum is σ = 920099772. Its totient is φ = 920099770.

The previous prime is 920099759. The next prime is 920099773. The reversal of 920099771 is 177990029.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920099771 is a prime.

Together with 920099773, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (920099773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460049885 + 460049886.

It is an arithmetic number, because the mean of its divisors is an integer number (460049886).

Almost surely, 2^920099771 is an apocalyptic number.

920099771 is a deficient number, since it is larger than the sum of its proper divisors (1).

920099771 is an equidigital number, since it uses as much as digits as its factorization.

920099771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 920099771 is about 30333.1464078490. The cubic root of 920099771 is about 972.6239829769.

The spelling of 920099771 in words is "nine hundred twenty million, ninety-nine thousand, seven hundred seventy-one".