499706189 has 2 divisors, whose sum is σ = 499706190. Its totient is φ = 499706188.

The previous prime is 499706161. The next prime is 499706239. The reversal of 499706189 is 981607994.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337016164 + 162690025 = 18358^2 + 12755^2 .

It is a cyclic number.

It is not a de Polignac number, because 499706189 - 2²⁸ = 231270733 is a prime.

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 499706189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499706149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249853094 + 249853095.

It is an arithmetic number, because the mean of its divisors is an integer number (249853095).

Almost surely, 2^499706189 is an apocalyptic number.

It is an amenable number.

499706189 is a deficient number, since it is larger than the sum of its proper divisors (1).

499706189 is an equidigital number, since it uses as much as digits as its factorization.

499706189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 499706189 is about 22354.1089958871. The cubic root of 499706189 is about 793.5450302257.

The spelling of 499706189 in words is "four hundred ninety-nine million, seven hundred six thousand, one hundred eighty-nine".