999198270 has 96 divisors (see below), whose sum is σ = 2978119872. Its totient is φ = 227690496.

The previous prime is 999198203. The next prime is 999198289. The reversal of 999198270 is 72891999.

999198270 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 220144 + ... + 224636.

It is an arithmetic number, because the mean of its divisors is an integer number (31022082).

Almost surely, 2^999198270 is an apocalyptic number.

999198270 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 999198270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1489059936).

999198270 is an abundant number, since it is smaller than the sum of its proper divisors (1978921602).

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

999198270 is a wasteful number, since it uses less digits than its factorization.

999198270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4866 (or 4863 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The square root of 999198270 is about 31610.0975955469. The cubic root of 999198270 is about 999.7326852158.

The spelling of 999198270 in words is "nine hundred ninety-nine million, one hundred ninety-eight thousand, two hundred seventy".