492944509 has 2 divisors, whose sum is σ = 492944510. Its totient is φ = 492944508.

The previous prime is 492944489. The next prime is 492944513. The reversal of 492944509 is 905449294.

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., 400880484 + 92064025 = 20022^2 + 9595^2 .

It is a cyclic number.

It is not a de Polignac number, because 492944509 - 2⁷ = 492944381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (492944519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246472254 + 246472255.

It is an arithmetic number, because the mean of its divisors is an integer number (246472255).

Almost surely, 2^492944509 is an apocalyptic number.

It is an amenable number.

492944509 is a deficient number, since it is larger than the sum of its proper divisors (1).

492944509 is an equidigital number, since it uses as much as digits as its factorization.

492944509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 492944509 is about 22202.3536815357. The cubic root of 492944509 is about 789.9495289019.

The spelling of 492944509 in words is "four hundred ninety-two million, nine hundred forty-four thousand, five hundred nine".