492977209 has 2 divisors, whose sum is σ = 492977210. Its totient is φ = 492977208.

The previous prime is 492977197. The next prime is 492977269. The reversal of 492977209 is 902779294.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 492706809 + 270400 = 22197^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 492977209 - 2⁷ = 492977081 is a prime.

It is not a weakly prime, because it can be changed into another prime (492977269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246488604 + 246488605.

It is an arithmetic number, because the mean of its divisors is an integer number (246488605).

Almost surely, 2^492977209 is an apocalyptic number.

It is an amenable number.

492977209 is a deficient number, since it is larger than the sum of its proper divisors (1).

492977209 is an equidigital number, since it uses as much as digits as its factorization.

492977209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 492977209 is about 22203.0900777347. The cubic root of 492977209 is about 789.9669958973.

The spelling of 492977209 in words is "four hundred ninety-two million, nine hundred seventy-seven thousand, two hundred nine".