492049889 has 2 divisors, whose sum is σ = 492049890. Its totient is φ = 492049888.

The previous prime is 492049847. The next prime is 492049891. The reversal of 492049889 is 988940294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 477859600 + 14190289 = 21860^2 + 3767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-492049889 is a prime.

It is a super-2 number, since 2×492049889² = 484226186529824642, which contains 22 as substring.

Together with 492049891, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 492049889.

It is not a weakly prime, because it can be changed into another prime (492049489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246024944 + 246024945.

It is an arithmetic number, because the mean of its divisors is an integer number (246024945).

Almost surely, 2^492049889 is an apocalyptic number.

It is an amenable number.

492049889 is a deficient number, since it is larger than the sum of its proper divisors (1).

492049889 is an equidigital number, since it uses as much as digits as its factorization.

492049889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 492049889 is about 22182.1975692220. The cubic root of 492049889 is about 789.4713597320.

The spelling of 492049889 in words is "four hundred ninety-two million, forty-nine thousand, eight hundred eighty-nine".