472839109 has 2 divisors, whose sum is σ = 472839110. Its totient is φ = 472839108.

The previous prime is 472839097. The next prime is 472839193. The reversal of 472839109 is 901938274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395134884 + 77704225 = 19878^2 + 8815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-472839109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472839709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236419554 + 236419555.

It is an arithmetic number, because the mean of its divisors is an integer number (236419555).

Almost surely, 2^472839109 is an apocalyptic number.

It is an amenable number.

472839109 is a deficient number, since it is larger than the sum of its proper divisors (1).

472839109 is an equidigital number, since it uses as much as digits as its factorization.

472839109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 472839109 is about 21744.8639683030. The cubic root of 472839109 is about 779.0604010352.

The spelling of 472839109 in words is "four hundred seventy-two million, eight hundred thirty-nine thousand, one hundred nine".