493271209 has 2 divisors, whose sum is σ = 493271210. Its totient is φ = 493271208.

The previous prime is 493271171. The next prime is 493271213. The reversal of 493271209 is 902172394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 384277609 + 108993600 = 19603^2 + 10440^2 .

It is a cyclic number.

It is not a de Polignac number, because 493271209 - 2⁹ = 493270697 is a prime.

It is not a weakly prime, because it can be changed into another prime (493271249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246635604 + 246635605.

It is an arithmetic number, because the mean of its divisors is an integer number (246635605).

Almost surely, 2^493271209 is an apocalyptic number.

It is an amenable number.

493271209 is a deficient number, since it is larger than the sum of its proper divisors (1).

493271209 is an equidigital number, since it uses as much as digits as its factorization.

493271209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 493271209 is about 22209.7097909901. The cubic root of 493271209 is about 790.1240039281.

The spelling of 493271209 in words is "four hundred ninety-three million, two hundred seventy-one thousand, two hundred nine".