472252909 has 2 divisors, whose sum is σ = 472252910. Its totient is φ = 472252908.

The previous prime is 472252873. The next prime is 472252927. The reversal of 472252909 is 909252274.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317623684 + 154629225 = 17822^2 + 12435^2 .

It is a cyclic number.

It is not a de Polignac number, because 472252909 - 2⁹ = 472252397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472252009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236126454 + 236126455.

It is an arithmetic number, because the mean of its divisors is an integer number (236126455).

Almost surely, 2^472252909 is an apocalyptic number.

It is an amenable number.

472252909 is a deficient number, since it is larger than the sum of its proper divisors (1).

472252909 is an equidigital number, since it uses as much as digits as its factorization.

472252909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 472252909 is about 21731.3807430637. The cubic root of 472252909 is about 778.7383224444.

The spelling of 472252909 in words is "four hundred seventy-two million, two hundred fifty-two thousand, nine hundred nine".