920288729 has 2 divisors, whose sum is σ = 920288730. Its totient is φ = 920288728.

The previous prime is 920288653. The next prime is 920288741. The reversal of 920288729 is 927882029.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538008025 + 382280704 = 23195^2 + 19552^2 .

It is a cyclic number.

It is not a de Polignac number, because 920288729 - 2¹⁶ = 920223193 is a prime.

It is a super-3 number, since 3×920288729³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (920288779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460144364 + 460144365.

It is an arithmetic number, because the mean of its divisors is an integer number (460144365).

Almost surely, 2^920288729 is an apocalyptic number.

It is an amenable number.

920288729 is a deficient number, since it is larger than the sum of its proper divisors (1).

920288729 is an equidigital number, since it uses as much as digits as its factorization.

920288729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 920288729 is about 30336.2609594525. The cubic root of 920288729 is about 972.6905599970.

The spelling of 920288729 in words is "nine hundred twenty million, two hundred eighty-eight thousand, seven hundred twenty-nine".