492479789 has 2 divisors, whose sum is σ = 492479790. Its totient is φ = 492479788.

The previous prime is 492479761. The next prime is 492479797. The reversal of 492479789 is 987974294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 454755625 + 37724164 = 21325^2 + 6142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-492479789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (492479719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246239894 + 246239895.

It is an arithmetic number, because the mean of its divisors is an integer number (246239895).

Almost surely, 2^492479789 is an apocalyptic number.

It is an amenable number.

492479789 is a deficient number, since it is larger than the sum of its proper divisors (1).

492479789 is an equidigital number, since it uses as much as digits as its factorization.

492479789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 59.

The square root of 492479789 is about 22191.8856566989. The cubic root of 492479789 is about 789.7012110481.

The spelling of 492479789 in words is "four hundred ninety-two million, four hundred seventy-nine thousand, seven hundred eighty-nine".