492639671 has 2 divisors, whose sum is σ = 492639672. Its totient is φ = 492639670.

The previous prime is 492639643. The next prime is 492639751. The reversal of 492639671 is 176936294.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 492639671 - 2¹⁰ = 492638647 is a prime.

It is a Chen prime.

It is equal to p_25988168 and since 492639671 and 25988168 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (492639601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246319835 + 246319836.

It is an arithmetic number, because the mean of its divisors is an integer number (246319836).

Almost surely, 2^492639671 is an apocalyptic number.

492639671 is a deficient number, since it is larger than the sum of its proper divisors (1).

492639671 is an equidigital number, since it uses as much as digits as its factorization.

492639671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The square root of 492639671 is about 22195.4876269930. The cubic root of 492639671 is about 789.7866597989.

The spelling of 492639671 in words is "four hundred ninety-two million, six hundred thirty-nine thousand, six hundred seventy-one".