492709991 has 2 divisors, whose sum is σ = 492709992. Its totient is φ = 492709990.

The previous prime is 492709969. The next prime is 492710011. The reversal of 492709991 is 199907294.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 492709991 - 2⁶ = 492709927 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 (492709901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246354995 + 246354996.

It is an arithmetic number, because the mean of its divisors is an integer number (246354996).

Almost surely, 2^492709991 is an apocalyptic number.

492709991 is a deficient number, since it is larger than the sum of its proper divisors (1).

492709991 is an equidigital number, since it uses as much as digits as its factorization.

492709991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 50.

The square root of 492709991 is about 22197.0716762369. The cubic root of 492709991 is about 789.8242363881.

The spelling of 492709991 in words is "four hundred ninety-two million, seven hundred nine thousand, nine hundred ninety-one".