498954979109 has 2 divisors, whose sum is σ = 498954979110. Its totient is φ = 498954979108.

The previous prime is 498954979093. The next prime is 498954979129. The reversal of 498954979109 is 901979459894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490669428484 + 8285550625 = 700478^2 + 91025^2 .

It is a cyclic number.

It is not a de Polignac number, because 498954979109 - 2⁴ = 498954979093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498954979129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249477489554 + 249477489555.

It is an arithmetic number, because the mean of its divisors is an integer number (249477489555).

Almost surely, 2^498954979109 is an apocalyptic number.

It is an amenable number.

498954979109 is a deficient number, since it is larger than the sum of its proper divisors (1).

498954979109 is an equidigital number, since it uses as much as digits as its factorization.

498954979109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264539520, while the sum is 74.

The spelling of 498954979109 in words is "four hundred ninety-eight billion, nine hundred fifty-four million, nine hundred seventy-nine thousand, one hundred nine".