472777289 has 2 divisors, whose sum is σ = 472777290. Its totient is φ = 472777288.

The previous prime is 472777223. The next prime is 472777307. The reversal of 472777289 is 982777274.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 334597264 + 138180025 = 18292^2 + 11755^2 .

It is a cyclic number.

It is not a de Polignac number, because 472777289 - 2²⁸ = 204341833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 472777289.

It is not a weakly prime, because it can be changed into another prime (472777219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236388644 + 236388645.

It is an arithmetic number, because the mean of its divisors is an integer number (236388645).

Almost surely, 2^472777289 is an apocalyptic number.

It is an amenable number.

472777289 is a deficient number, since it is larger than the sum of its proper divisors (1).

472777289 is an equidigital number, since it uses as much as digits as its factorization.

472777289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2765952, while the sum is 53.

The square root of 472777289 is about 21743.4424367440. The cubic root of 472777289 is about 779.0264475457.

The spelling of 472777289 in words is "four hundred seventy-two million, seven hundred seventy-seven thousand, two hundred eighty-nine".