498667109 has 2 divisors, whose sum is σ = 498667110. Its totient is φ = 498667108.

The previous prime is 498667097. The next prime is 498667111. The reversal of 498667109 is 901766894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 476548900 + 22118209 = 21830^2 + 4703^2 .

It is a cyclic number.

It is not a de Polignac number, because 498667109 - 2²⁴ = 481889893 is a prime.

Together with 498667111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498667139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249333554 + 249333555.

It is an arithmetic number, because the mean of its divisors is an integer number (249333555).

Almost surely, 2^498667109 is an apocalyptic number.

It is an amenable number.

498667109 is a deficient number, since it is larger than the sum of its proper divisors (1).

498667109 is an equidigital number, since it uses as much as digits as its factorization.

498667109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 498667109 is about 22330.8555366784. The cubic root of 498667109 is about 792.9946208237.

The spelling of 498667109 in words is "four hundred ninety-eight million, six hundred sixty-seven thousand, one hundred nine".