920788129 has 2 divisors, whose sum is σ = 920788130. Its totient is φ = 920788128.

The previous prime is 920788123. The next prime is 920788157. The reversal of 920788129 is 921887029.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 867891600 + 52896529 = 29460^2 + 7273^2 .

It is a cyclic number.

It is not a de Polignac number, because 920788129 - 2¹¹ = 920786081 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (920788123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460394064 + 460394065.

It is an arithmetic number, because the mean of its divisors is an integer number (460394065).

Almost surely, 2^920788129 is an apocalyptic number.

It is an amenable number.

920788129 is a deficient number, since it is larger than the sum of its proper divisors (1).

920788129 is an equidigital number, since it uses as much as digits as its factorization.

920788129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 920788129 is about 30344.4909168040. The cubic root of 920788129 is about 972.8664735662.

It can be divided in two parts, 9207 and 88129, that added together give a cube (97336 = 46³).

The spelling of 920788129 in words is "nine hundred twenty million, seven hundred eighty-eight thousand, one hundred twenty-nine".