920910929 has 2 divisors, whose sum is σ = 920910930. Its totient is φ = 920910928.

The previous prime is 920910911. The next prime is 920910931. The reversal of 920910929 is 929019029.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 666827329 + 254083600 = 25823^2 + 15940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-920910929 is a prime.

It is a Sophie Germain prime.

Together with 920910931, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (920910959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460455464 + 460455465.

It is an arithmetic number, because the mean of its divisors is an integer number (460455465).

Almost surely, 2^920910929 is an apocalyptic number.

It is an amenable number.

920910929 is a deficient number, since it is larger than the sum of its proper divisors (1).

920910929 is an equidigital number, since it uses as much as digits as its factorization.

920910929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 920910929 is about 30346.5142808857. The cubic root of 920910929 is about 972.9097201028.

The spelling of 920910929 in words is "nine hundred twenty million, nine hundred ten thousand, nine hundred twenty-nine".