498385791 has 80 divisors (see below), whose sum is σ = 811819008. Its totient is φ = 304041600.

The previous prime is 498385763. The next prime is 498385801. The reversal of 498385791 is 197583894.

498385791 is a `hidden beast` number, since 498 + 3 + 85 + 79 + 1 = 666.

It is not a de Polignac number, because 498385791 - 2⁷ = 498385663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498385291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4838646 + ... + 4838748.

Almost surely, 2^498385791 is an apocalyptic number.

498385791 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

498385791 is a deficient number, since it is larger than the sum of its proper divisors (313433217).

498385791 is a wasteful number, since it uses less digits than its factorization.

498385791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 225 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 498385791 is about 22324.5557850543. Note that the first 3 decimals coincide. The cubic root of 498385791 is about 792.8454728116.

The spelling of 498385791 in words is "four hundred ninety-eight million, three hundred eighty-five thousand, seven hundred ninety-one".