498794459389 has 2 divisors, whose sum is σ = 498794459390. Its totient is φ = 498794459388.

The previous prime is 498794459377. The next prime is 498794459399. The reversal of 498794459389 is 983954497894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497142036889 + 1652422500 = 705083^2 + 40650^2 .

It is a cyclic number.

It is not a de Polignac number, because 498794459389 - 2²⁷ = 498660241661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498794459369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249397229694 + 249397229695.

It is an arithmetic number, because the mean of its divisors is an integer number (249397229695).

Almost surely, 2^498794459389 is an apocalyptic number.

It is an amenable number.

498794459389 is a deficient number, since it is larger than the sum of its proper divisors (1).

498794459389 is an equidigital number, since it uses as much as digits as its factorization.

498794459389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2821754880, while the sum is 79.

The spelling of 498794459389 in words is "four hundred ninety-eight billion, seven hundred ninety-four million, four hundred fifty-nine thousand, three hundred eighty-nine".