999998502 has 8 divisors (see below), whose sum is σ = 1999997016. Its totient is φ = 333332832.

The previous prime is 999998501. The next prime is 999998507. The reversal of 999998502 is 205899999.

999998502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

999998502 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999998501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83333203 + ... + 83333214.

It is an arithmetic number, because the mean of its divisors is an integer number (249999627).

Almost surely, 2^999998502 is an apocalyptic number.

999998502 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.

999998502 is a wasteful number, since it uses less digits than its factorization.

999998502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166666422.

The product of its (nonzero) digits is 4723920, while the sum is 60.

The square root of 999998502 is about 31622.7529162152. The cubic root of 999998502 is about 999.9995006664. Note that the first 3 decimals are identical.

The spelling of 999998502 in words is "nine hundred ninety-nine million, nine hundred ninety-eight thousand, five hundred two".