498419981 has 2 divisors, whose sum is σ = 498419982. Its totient is φ = 498419980.

The previous prime is 498419947. The next prime is 498420001. The reversal of 498419981 is 189914894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459244900 + 39175081 = 21430^2 + 6259^2 .

It is a cyclic number.

It is not a de Polignac number, because 498419981 - 2¹⁴ = 498403597 is a prime.

It is a super-2 number, since 2×498419981² = 496844954920080722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (498419081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249209990 + 249209991.

It is an arithmetic number, because the mean of its divisors is an integer number (249209991).

Almost surely, 2^498419981 is an apocalyptic number.

It is an amenable number.

498419981 is a deficient number, since it is larger than the sum of its proper divisors (1).

498419981 is an equidigital number, since it uses as much as digits as its factorization.

498419981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 53.

The square root of 498419981 is about 22325.3215206411. The cubic root of 498419981 is about 792.8636025198.

The spelling of 498419981 in words is "four hundred ninety-eight million, four hundred nineteen thousand, nine hundred eighty-one".