498558999 has 4 divisors (see below), whose sum is σ = 664745336. Its totient is φ = 332372664.

The previous prime is 498558989. The next prime is 498559049. The reversal of 498558999 is 999855894.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-498558999 is a prime.

It is a super-2 number, since 2×498558999² = 497122150967764002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498558919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83093164 + ... + 83093169.

It is an arithmetic number, because the mean of its divisors is an integer number (166186334).

Almost surely, 2^498558999 is an apocalyptic number.

498558999 is a deficient number, since it is larger than the sum of its proper divisors (166186337).

498558999 is a wasteful number, since it uses less digits than its factorization.

498558999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166186336.

The product of its digits is 41990400, while the sum is 66.

The square root of 498558999 is about 22328.4347637715. The cubic root of 498558999 is about 792.9373101496.

The spelling of 498558999 in words is "four hundred ninety-eight million, five hundred fifty-eight thousand, nine hundred ninety-nine".