499999998 has 8 divisors (see below), whose sum is σ = 1000000008. Its totient is φ = 166666664.

The previous prime is 499999993. The next prime is 500000003. The reversal of 499999998 is 899999994.

It is an interprime number because it is at equal distance from previous prime (499999993) and next prime (500000003).

It is a sphenic number, since it is the product of 3 distinct primes.

499999998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499999993) 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 3 ways as a sum of consecutive naturals, for example, 41666661 + ... + 41666672.

It is an arithmetic number, because the mean of its divisors is an integer number (125000001).

Almost surely, 2^499999998 is an apocalyptic number.

499999998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

499999998 is a wasteful number, since it uses less digits than its factorization.

499999998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83333338.

The product of its digits is 153055008, while the sum is 75.

The square root of 499999998 is about 22360.6797302765. The cubic root of 499999998 is about 793.7005249258.

The spelling of 499999998 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-eight".