492687939929 has 2 divisors, whose sum is σ = 492687939930. Its totient is φ = 492687939928.

The previous prime is 492687939901. The next prime is 492687939973. The reversal of 492687939929 is 929939786294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 271362855625 + 221325084304 = 520925^2 + 470452^2 .

It is a cyclic number.

It is not a de Polignac number, because 492687939929 - 2⁸ = 492687939673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 492687939929.

It is not a weakly prime, because it can be changed into another prime (492687939229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246343969964 + 246343969965.

It is an arithmetic number, because the mean of its divisors is an integer number (246343969965).

Almost surely, 2^492687939929 is an apocalyptic number.

It is an amenable number.

492687939929 is a deficient number, since it is larger than the sum of its proper divisors (1).

492687939929 is an equidigital number, since it uses as much as digits as its factorization.

492687939929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952342272, while the sum is 77.

The spelling of 492687939929 in words is "four hundred ninety-two billion, six hundred eighty-seven million, nine hundred thirty-nine thousand, nine hundred twenty-nine".